Mitochondria are found abundantly in the midpiece of the sperm. The midpiece is located just behind the head of the sperm and contains many mitochondria that provide energy for the sperm to swim towards the egg. The egg, on the other hand, contains mitochondria throughout its cytoplasm. This is because the egg needs a large amount of energy to support the early stages of embryonic development, before the zygote can begin to produce its own energy.
During fertilization, the sperm and egg combine to form a zygote. The mitochondria from the sperm are typically destroyed after fertilization, so the zygote relies solely on the mitochondria from the egg for energy production. This is why mitochondrial DNA is inherited solely from the mother in most animals, including humans.
Write a scientific argument to Alex Young that addresses the question: What caused the stickleback population to have less armor and become faster?
The stickleback population's reduced armor and increased speed can is due to natural selection because the sticklebacks with less armor and greater speed were better adapted to their environment resulting in greater survival rates and higher reproductive success.
What is natural selection?Natural selection is the variation in individual survival and reproduction brought on by phenotypic variances.
Environment-adapted organisms have a higher chance of surviving and dispersing the genes that contributed to their success. Over time, this process leads to the evolution and divergence of species.
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As you know bone marrow makes red blood cells, white blood cells and platelets and as you grow it begins to store fat. What do you think a bone marrow transplant will allow the recipient to do?
short explanation thx
Answer:
A bone marrow transplant allows the recipient to receive healthy bone marrow from a donor. This can be life-saving for people with certain types of cancer, genetic disorders, or other conditions that affect the bone marrow's ability to produce blood cells. The transplanted bone marrow can restore the recipient's ability to produce healthy blood cells and improve their overall health and quality of life.
Gel Electrophoresis: please fill in the blanks!
Based on their size, shape, and electrical charge, molecules including DNA, RNA, and proteins may be separated and analysed using the gel electrophoresis technique.
It entails applying a charged electric field to a gel or matrix, causing the molecules to move through the gel and towards the anode, or positive electrode.
Smaller molecules pass through the gel more quickly than bigger ones, therefore they are segregated depending on their size and charge. Additionally, compared to molecules with a lower charge, those with a higher charge will move through the gel more quickly.
Gel electrophoresis is an effective method for examining and contrasting the sizes and charges of molecules. It may be used to recognise and describe many compounds, including DNA and proteins.
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%. When a few individuals become isolated from a larger population and establish a new one whose gene pool is not reflective of the source population is called
Genetic drift and tends to lead to a loss of genetic diversity
b. Genetic drift and tends to lead to an increase in genetic diversity
c. Gene flow and tends to lead to a reduction in genetic differences between the populations
d. Gene flow and tends to lead to an increase in genetic differences between the populations
Answer:The answer is D
what may happen to a solid when it is continuously exposed to heat?
When a solid is continuously exposed to heat, it may undergo a phase change and transform into a liquid or a gas.
This happens because heat causes the molecules in the solid to gain energy and vibrate more rapidly. As a result, the attractive forces between the molecules weaken, and the solid's structure begins to break down.
If the temperature continues to increase, the solid will eventually reach its melting point and transform into a liquid. This is known as melting or fusion. If the temperature continues to increase even further, the liquid may reach its boiling point and transform into a gas. This is known as vaporization.
However, not all solids will transform into a liquid or gas when exposed to heat. Some solids may undergo a chemical reaction instead, breaking down into new compounds or elements.
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2 Midori knows that plants grow from seeds. In what part of the plant are seeds formed?
A. leaves and roots
B. cones and leaves
C. stems and flowers
D. flowers and cones
Answer:
Explanation:
A
When body temp increases it causes
metabolic reactions to increase, which
releases heat that further increases body
temp. This is an example of
a. Homeostasis
b. Positive feedback
c. Negative feedback
d. All of the above
When body temp increases it causes metabolic reactions to increase, which releases heat that further increases body temp. This is an example of positive feedback.
Positive feedback is a process in which a change in a system leads to an amplified or increased response in the same direction as the initial change, rather than stabilizing the system as negative feedback does. In positive feedback, the output enhances or reinforces the original stimulus, leading to a cascading effect of the process, which can be beneficial or detrimental to the system depending on the context.
Positive feedback loops can be found in various biological processes, such as blood clotting, childbirth, and action potentials in neurons, and can also be observed in non-biological systems, such as climate change and population growth.
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The plant shown in the photo is a vine. It can grow where
there are many other plants and plenty of water year-
round.
alla
C) The type of ecosystem that is more likely to have a large number of vines that can grow where there are many other plants and plenty of water year-round is a rainforest.
Rainforests are among the most biologically different ecosystems on Earth, home to millions of species of shops and creatures, numerous of which are set up nowhere differently. Vines are an important element of the rainforest ecosystem, serving as a source of food, sanctum, and niche for numerous creatures.
Some exemplifications of common rainforest vines include lianas, which can climb up to the cover of trees and give a ground for creatures to cross from one tree to another, and epiphytes, which grow on trees and can give a home for insects, catcalls, and other brutes. still, rainforests are under trouble from deforestation, niche destruction, and climate change.
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In DNA recombination, what is created when the DNA is opened up at the restriction site?
Responses
A double-stranded DNAdouble-stranded DNA
B RNARNA
C sticky ends
Answer:
C. Sticky ends.
Explanation:
C. Sticky ends.
When the DNA is opened up at the restriction site during DNA recombination, the enzyme creates a double-stranded cut leaving short, single-stranded overhangs called sticky ends. These sticky ends can base pair with complementary sticky ends generated by the same restriction enzyme on another DNA molecule, allowing the two DNA molecules to be joined together. This process is used in DNA cloning and other genetic engineering techniques.
What is an example of another pattern in nature that is caused by the
position of objects in the solar system?
A The petals of a flower
B Zebra stripes
C Day and night
D A bee's honeycomb
An example of another pattern in nature that is caused by the position of objects in the solar system is (d) A bee's honeycomb
Explaning another example of the patternFrom the question, we have the pattern to be:
Object's position in the solar systemA pattern in natureBy definition, the objects in the solar system are located in their relative location to the sun and also have impacts on the other bodies in the solar system.
The example of pattern that fits this scenario from the list of options is the (d) bee's honeycomb
This is because the bee uses the direction and angle of the sun to steer and also keep in touch with each other
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8.
gases in the atmosphere,
including
maintain surface air temperature.
anola. Condensed, nitrogen
b. Greenhouse, water vapor
trap radiated heat and help
c. Flammable, carbon dioxide
d. Inert, oxygen
Answer:
Explanation:b cause its a non verbal. answer for the asset.
Quest Connection
Choose a plant. Find a structure of the plant with an
interesting shape. What human products have a similar
shape with a similar purpose?
I choose the Venus Flytrap plant, which has a unique and fascinating shape with its carnivorous leaves that can snap shut to catch insects.
What is a similar human product?One human product with a similar shape and purpose is the mousetrap. Like the Venus Flytrap, a mousetrap uses a mechanism to quickly and effectively trap its prey. Both of these structures rely on the principle of a trigger mechanism to quickly capture their prey.
Another similar human product is the snap hair clip, which uses a similar mechanism to quickly snap shut and hold hair in place.
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Please help !!!!!!!!!!!
Answer:
1) Weathering, Erosion, Disposition
2) Physical weathering is the breakdown of large rocks into fragments by physical forces; the chemical composition of the rock is not changed. Chemical weathering is the breakdown of rock by chemical reactions; the chemical composition is changed.
3) The four forces of erosion are water, wind, gravity, and glaciers.
4) Because the velocity of the river slows down a great deal when it reaches the large body of water, the sediment that the river was carrying is deposited along the mouth of the large body of water.
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Abrasion: Abrasion is the breaking down and wearing away of rock material by the mechanical action of another rock. Three agents of physical weathering that cause abrasion are moving water, wind, and gravity. Also, rocks suspended in thence of a glacier can cause abrasion of other rocks on Earth's surface. This would be a prime example of physical weathering, or mechanical weathering.
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Acid Precipitation: Acid rain causes less erosion than normal rainwater does. Rainwater can break down rocks by dissolving minerals in the rocks. Acid rain is rainwater that is more acidic than normal rainwater. Acid rain can also dissolve the minerals in rocks faster than normal rainwater can. This is chemical weathering.
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Animal actions: Animal and plant mobility is a factor in biological weathering. For instance, a plant may grow in a gap in a rock and, as its roots spread, cause the fracture to expand. A rabbit may also burrow into a crack in a rock, making it wider and eventually separating the rock. This is an example of physical weathering.
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Ice wedging: Ice wedging ,sometimes known as frost wedging ,can also cause rocks to break apart. Ice wedging causes cracks in rocks to expand as water seeps in and the water freezes and expands opening the crack further. Rocks formed under pressure deep within earth can become exposed at the surface. This is physical weathering
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Oxidation: Oxidation is another kind of chemical weathering. It occurs when oxygen from air dissolves in water and combines with chemicals in the rocks to form oxides. if the rock contains a lot of iron, then oxidation produces a brown material called iron oxide. This looks like rust on the rock.
What is the difference between weathering erosion and deposition?Weathering is the chemical and mechanical breakdown of exposed rock. The chemical changes alter the minerals and make them softer, and mechanical weathering physically breaks rock into smaller and smaller pieces.
Erosion is the REMOVAL of those chemically and mechanically softer and broken pieces of rock from their original locations, by gravity, water, ice or wind. Erosion is transport (and as a result, fresh unaltered rock is exposed to wind, water and weather, and THAT becomes weathered in turn). The material being transported is ‘sediment’: sand, silt, mud and gravel.
Deposition is when the weathered and eroded (transported) material is dropped and settles down elsewhere, forming a ‘deposit’ of transported rock material.
If this deposit remains undisturbed long enough, and is buried by enough arriving material, it will eventually go through compaction and chemical reactions forming cement between the grains - thus resulting in a brand new, sedimentary rock.
Weathering, erosion, transport, deposition, compaction and cementation are part of the ‘rock cycle’.
How can the complete rock cycle be described?Let’s start with basalt that form at mid ocean spreading centers. At mid ocean spreading centers rock material from the earth’s mantle continuously melts due to continuous decreasing in pressure from the oceanic crust spreading at this point. The molten rock quickly cools at the earth’s surface and forms rock known as basalt that makes up the oceanic crust all over the world. The newly produced oceanic crust rock slowly moves towards a boundary with a continental crust where the oceanic crust subducts beneath the continental crust due to the oceanic crust having a higher density than the continental crust. This is where things get a bit more interesting.
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From which direction would weather come to a city at 65-degrees north?
Weather in the northern hemisphere comes in the west to east direction.
The weather is affected mainly by the type of wind and the energy radiated by the earth in that region.
The rotation of the earth and Coriolis force affect the direction of a wind, making it flow in the counterclockwise direction.
Thus, the wind flows from the subtropic belt to the sub-polar belt, in the west to east direction. Such winds are known as the westerlies.
Energy that is absorbed by the earth's surface is radiated back into the atmosphere. Due to the rotation and revolution of the earth, there is a variation in the energy absorbed and given back. This also contributes to the weather of an area.
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College biology help please
The mode of determination for cells in a developing vertebrate spinal cord is mediated by cell-to-cell signaling through Notch signaling pathway.
What is the Notch signaling pathway?The Notch signaling pathway is a highly conserved signaling pathway that plays a crucial role in regulating cell fate decisions during embryonic development.
In the vertebrate spinal cord, Notch signaling plays a critical role in specifying the fates of neural progenitor cells (NPCs) by promoting the maintenance of NPCs and inhibiting their differentiation into neurons.
This process is mediated by the interaction between the transmembrane receptor Notch on NPCs and its ligand Delta on neighboring cells, which leads to the activation of Notch signaling pathway in the NPCs.
The downstream effectors of the Notch signaling pathway then regulate the expression of genes that control NPC maintenance and differentiation, thereby determining the fate of the NPCs.
Therefore, the mode of determination for cells in a developing vertebrate spinal cord is mediated by the Notch signaling pathway, which is a form of cell-to-cell signaling.
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(ANSWER ASAP!! :) GIVING BRAINLIEST WHEN I CAN)
Look at the Punnett square above. Mom and dad are both heterozygous - which means they both have 1 dominant gene and 1 recessive gene.
What is the phenotype ratio (physical trait) for their offspring?
Dominant Gene: H - Purple Fur
Recessive Gene: h - White Fur
Genotypic Ratio: 1:2:1
Phenotypic Ratio: 3:1 (purple fur : white fur)
The laws of Mendel are three fundamental principles of inheritance that were discovered and described by the scientist Gregor Mendel in the 19th century. These laws describe how traits are passed down from parent to offspring and provide the foundation for our understanding of genetics.
The three laws of Mendel are:
The Law of Segregation: This law states that during the formation of gametes (sperm and egg cells), the two copies of each hereditary factor (allele) segregate so that offspring inherit one allele from each parent. This is also known as the principle of dominance, where one allele can be dominant over the other and determine the observable trait.
The Law of Independent Assortment: This law states that during gamete formation, the segregation of one pair of alleles is independent of the segregation of other pairs of alleles. This means that the inheritance of one trait is not influenced by the inheritance of another trait.
The Law of Dominance: This law states that when two different alleles for a given trait are present in an individual, one allele (the dominant allele) is expressed and the other allele (the recessive allele) is not expressed in the phenotype of the organism.
These laws help to explain the patterns of inheritance observed in sexual reproduction and have practical applications in the field of genetics, such as in predicting the likelihood of inherited genetic disorders and in breeding programs for plants and animals.
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Describe how Newton's 1st Law of Motion is used on a daily basis at school?
Click all that is true. The functions of proteins are:
transport important things in your body
build the structures of your body
enzymes to make chemical reactions go faster
send messages to cells
make antibodies to fight viruses
Answers:
2. build the structures of your body
3. enzymes to make chemical reactions go faster
5. make antibodies to fight viruses
The functions of proteins are:
transport important things in your body build the structures of your body enzymes to make chemical reactions go fastersend messages to cellsmake antibodies to fight virusesWhat are the properties of protein?Proteins are organic macromolecules made up of amino acids joined by peptide bonds. They have a complex and diverse structure and play many essential roles in the body. Some of the properties of proteins include:
Structural diversity: Proteins have a highly diverse structure, which is important for their many functions.
Amino acid composition: Proteins are made up of different combinations of 20 different amino acids.
Size: Proteins can vary greatly in size, from small peptides to large multi-subunit complexes.
Shape: Proteins can have complex 3D shapes that are critical to their function.
Solubility: Proteins can be either soluble or insoluble in water, depending on their structure and composition.
Stability: Proteins can be stable or unstable under certain conditions, such as changes in temperature, pH, or salt concentration.
Function: Proteins have a wide range of functions in the body, including structural support, enzyme catalysis, transport, and communication.
Denaturation: Proteins can lose their structure and function when exposed to certain physical or chemical conditions, a process known as denaturation.
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8. The following is an example of what type of mutation?
DNA
ATG
mRNA
UAC
tyrosine (normal protein)
normal
a. An inversion mutation
b. A translocation mutation
c. A point mutation
d. A duplicate mutation
The given mutation is an example of a point mutation.
The correct option is C.
What is a point mutation?A point mutation is a type of genetic mutation that involves a change in a single nucleotide base within DNA.
This type of mutation can occur during DNA replication or due to environmental factors, such as exposure to radiation or certain chemicals.
Point mutations can have a variety of effects on the resulting protein that is produced from the altered DNA sequence. Some point mutations may have no effect on the protein, while others can lead to the production of a non-functional protein or a protein with altered function. Depending on the location and nature of the mutation, it may have no effect on the organism, be harmful, or even beneficial.
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why did the fox population take a year to decrease if the hares are their prey and decreased?
Answer:
Prey leads predators
Explanation:
if the prey goes up predators goes up
if the prey goes down predators go down this is because with a small amount of prey the predators have less to eat and die off but of there is a lot then exponential growth happens with the predators until the prey goes down creating a loop
Which of the following statements is not true?
A.
Cells vary in their shapes and functions.
B. In all living things, genetic instructions, genes are stored in DNA molecules.
C. The fundamental units of life are cells.
D. The entire library of genetic information in its DNA is known as the cell's genome
E. Prokaryotes do not have DNA.
Answer:
The statement that is not true is E. Prokaryotes do have DNA. It is usually found in a single circular chromosome in the nucleoid region of the cell.
Explanation:
Prokaryotes are unicellular organisms that lack a membrane-bound nucleus and other complex cell structures. They are the simplest type of organism and include bacteria and archaea. Despite their simplicity, prokaryotes have a variety of shapes and can carry out all the processes necessary for life. They have DNA, which contains their genetic information. In prokaryotes, the DNA is usually found in a single circular chromosome in the nucleoid region of the cell. This is different from eukaryotes, which have multiple linear chromosomes contained within a membrane-bound nucleus.
Received message. Sure! Prokaryotes are unicellular organisms that lack a membrane-bound nucleus and other complex cell structures. They are the simplest type of organism and include bacteria and archaea. Despite their simplicity, prokaryotes have a variety of shapes and can carry out all the processes necessary for life. They have DNA, which contains their genetic information. In prokaryotes, the DNA is usually found in a single circular chromosome in the nucleoid region of the cell. This is different from eukaryotes, which have multiple linear chromosomes contained within a membrane-bound nucleus.
Consider logistic model, = () = (1 − ) . Find the equilibrium points and the linearization about each for the logistic model. Hence determine the stability of each of these equilibrium points.
There are two points of equilibrium: N = 0 and N = K.
It is stable at the equilibrium point N = K and N = 0 is unstable.
How to determine equilibrium points?The logistic model is given by:
dN/dt = rN(1 - N/K)
where N = population size, t = time, r = intrinsic growth rate, and K = carrying capacity.
To find the equilibrium points, we set dN/dt = 0 and solve for N:
rN(1 - N/K) = 0
This equation has two solutions: N = 0 and N = K. Therefore, the equilibrium points are N = 0 and N = K.
To find the linearization about N = 0, take the derivative of dN/dt with respect to N and evaluate it at N = 0:
f(N) = rN(1 - N/K)
df/dN = r(1 - 2N/K)
df/dN|N=0 = r
The linearization about N = 0 is therefore:
dN/dt = rN
This is a simple exponential growth model, and the equilibrium point N = 0 is unstable.
To find the linearization about N = K, take the derivative of dN/dt with respect to N and evaluate it at N = K:
f(N) = rN(1 - N/K)
df/dN = r(1 - 2N/K)
f/dN|N=K = -r
The linearization about N = K is therefore:
dN/dt = rN(K - N)/K
This is a simple logistic growth model, and the equilibrium point N = K is stable.
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This question: 1
point(s) possible
This passage, Aquatic Food Supplies, is from a geography textbook
Review the passage as needed
Subr
What is the implied meaning of this statement from paragraph 47
A deluge of modern, highly capitalized fishing threatens to drown traditional fisherman in a sea of despair
A. Certain hardshes and experiences are shared by people who practice traditional fishing methods
B Severe storms present a great risk to people who practice traditional fishing methods
Nex
This passage shows that certain difficulties and experiences are shared by people who practice traditional fishing methods, as shown in option A.
What does the passage show?Fishing methods have evolved and modernized.Traditional fishing has lost space in the market.The text shows how the techniques and resources used to promote fishing have been modernized and become faster and more efficient to contain the demands of the capitalist market.
Traditional fishing has not been able to keep up with this evolution, which has created difficulties for traditional fishermen who have traditional fishing as their main source of income.
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Using the information from the reading, create a biomass diagram using lions/buffaloes/grasses what do you think it would look like based on what you know about the 10% rule?
Answer: It depends on the reading, but it should show the grass with the most energy, the buffalo with 90% less energy than the grass, and the lions with 90% less energy than the buffalo
Explanation: The ten percent rule states that, when energy is transferred from one organism to another, only 10% of the energy is conserved. The other 90% is lost as heat. So, heterotrophs (organisms that produce their own energy) like the grass would have the most energy, the buffalo would only receive 10% of that, and the lions only 10% of the buffalos' energy.
Which of the following is a benefit of direct air capture technology?
O Moves carbon into the
atmosphere
O Provide carbon dioxide to crops in greenhouses
O Releasing carbon dioxide over the ozone layer
OUsing new fossil fuels for energy
The benefit of direct air capture technology is the ability to remove carbon dioxide from the atmosphere.
What does carbon dioxide do to the atmosphere?It causes a greater incidence of solar rays on the surface of the planet.It corrupts the ozone layer.Carbon dioxide is absorbed by plants during the photosynthesis process and this is important to keep the atmosphere free of this compound, but with the advancement of the use of fossil energies and intense deforestation, this compound accumulates in the atmosphere and causes various environmental problems, for this reason, using direct air capture technology can be beneficial to remove carbon dioxide from the atmosphere.
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Compare and contrast the function of organs and other physical structures of plants and animals.
PARAGRAPH EXPLANATION PLEASE
Animals and plants have completely distinct body structures and metabolic processes.
Animals have a layer of skin, while plants have a waxy outer covering. Water and nutrients are moved throughout the structures of plants. Animals transmit blood containing oxygen, nutrients, and waste products through arteries, veins, and capillaries. Animals have five senses: eyes, ears, noses, and tongues.
Photosynthesis and reproduction are just two of the many tasks performed by this system. The organ systems of plants collaborate to form the structure and functionality of the entire organism, just like those of animals.
Animals have a large number of distinctive and specialised organs, whereas plants only have leaves, stems, and roots as organs.
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Asiatic Cheetahs currently live in a much smaller areas than they once did because of human mpact. Scientist estimate that the total Asiatic Cheetah population is only about 100 adults.
Vhich of the following best predicts the result of having a small and isolated Asiatic Cheetah population?
Answer:
Explanation:
A small and isolated Asiatic Cheetah population is likely to face several challenges, including:
Genetic inbreeding: With a limited number of individuals in the population, there is a higher chance of genetic inbreeding. This can lead to reduced genetic diversity and an increased risk of genetic defects and diseases.
Limited gene flow: When a population is isolated, there is limited gene flow between different groups of animals. This can lead to reduced genetic diversity and increased inbreeding.
Vulnerability to environmental and human pressures: A small population is more vulnerable to environmental pressures such as climate change, natural disasters, and human impacts like habitat loss, poaching, and hunting. With a limited number of individuals, the loss of even a few individuals can have a significant impact on the population.
Reduced adaptability: With a limited number of individuals and limited genetic diversity, the population may be less able to adapt to changing environmental conditions or to cope with new threats.
Therefore, the best prediction of a small and isolated Asiatic Cheetah population is that it is at risk of declining further and may eventually face extinction if adequate conservation measures are not taken to protect and expand their habitat, prevent poaching and hunting, and promote genetic diversity through breeding programs.
Your friend left a cage open and several genetically modified frog escaped. Near graduation you find that the population has been living in Tracer pond. Wild frogs are homozygous dominant for smooth skin the genetically modified are homozygous recessive for bumpy skin. There are 826 that are smooth skinned out of the 375 that are heterozygous and 85 frogs have bumpy skin
What is the frequency of the recessive allele?
What is the frequency of the dominant allele?
Write two sentences to describe one similarity and one difference between personal and national budgets
(here's the passage if needed. i know its not much)
3. (A) Pollution is the contamination of air, water or earth by harmful substance. (B)
We should take care of our environment. (C) Among the types of pollution, the
one that has existed longer than any other is water pollution. (D) Its
consequences are readily seen when pollutants reach groundwater reservoirs.
(E) This creates serious health hazards to people drinking the water.
The
topic
The
supporting
detail
that
sentence
does
not
belong
is:
is:
The sentence that does not belong as a supporting detail for the topic sentence "Pollution is the contamination of air, water or earth by harmful substance" is sentence B: "We should take care of our environment." While it is a related idea and certainly a good practice, it does not provide any additional information about the topic of pollution or how it affects the environment and human health. The other sentences provide specific details about the types and consequences of pollution, and support the idea that pollution is a serious issue that requires attention and action.
