Th difference between the three type of selection has been that stabilization selection keeps allele frequency constant, direction selection changes the allele frequency over generation, while disruptive selection maintain high allele frequency.
What is natural selection ?
Natural selection is the process by which populations of organisms adapt and change.
The 3 Types of Natural Selection
Stabilizing SelectionDirectional SelectionDisruptive SelectionStabilizing SelectionStabilizing selection is natural selection that keeps allele frequencies relatively constant from generation to generation. In other words, unless the environment changes, things stay the same.
A classic example of stabilizing selection is human birth weight Very low birth weight and very high birth weight are mutually selected to keep the mean birth weight
Directional SelectionDirectional selection is a natural selection that causes gradual changes in allele frequencies over several generations. This usually occurs when environmental/selection pressures change or when favorable new alleles emerge within the population.
Example: Recent findings show that climate change is affecting fish size in certain habitats.
Disruptive SelectionDestructive selection is natural selection that maintains high frequencies of two different allele sets. In other words, individuals with intermediate phenotypes or alleles are selected.
Destructive selection causes polymorphism: the persistence of two or more distinct phenotypes in species . This can occur in environments that exhibit variability.
For example, birds in the Galapagos Islands use their beaks to forage seeds of various sizes.
Therefore, the difference between the three types of natural selection is that:
Stabilizing selection keeps allele frequencies relatively constant from generation to generation.
Directional selection causes gradual changes in allele frequencies over several generations.
Destructive selection maintains high frequencies of two different allele sets.
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PLZZ HELP!
In what organelle is the genetic material found inside?
Question 3 options:
Golgi Apparatus
Nucleus
Ribosome
Mitochondria
Answer:
nucleus is the answer your welcome
Answer:
nucleus
Explanation:
Im taking the test now
Explain how form and function are related in human cells. Include examples.
How do environmental issues impact food production?
Answer:
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What is the function of a coenzyme?
1. Binds to the substrate to raise activation energy
2. Inhibits the metabolic pathway of the enzyme
3. Couples with an enzyme to help remove or add electrons in order for the reaction to be catalyzed
4. Is a secondary protein complex that produces ATP
Ribosomes assemble proteins from___?
DNA
amino acids
mitochondria
cytoplasm
Answer:
Amino acids.
Explanation:
PLEASE HELP IM DOING A TEST RN!!
Which of the following describes how the pollen must travel in order for pollination to occur?
Question 18 options:
. from the stigma to the anther
from an anther to the style
from an anther to the stigma
from the stigma to the pollen tube
Answer:
from an anther to the stigma
Explanation:
Answer:
Anther to stigma!
The anther is where the pollen is granulated, and the stigma is the part where they reproduce.
Which of the following represents a cross between two heterozygous plants?
A. Ww x WW
B. ww x WW
C. Ww x Ww
D. WW x WW
Find 2 ways that natural gas forms. List the steps of the two carbon pathways below. Label each location with A for atmosphere, B for the biosphere, G for geosphere, or H for hydrosphere. Use P for the anthroposphere.
Answer:
Biogenic and thermogenic
Explanation:
Biogenic and thermogenic are the two ways or mechanism that is responsible for formation of natural gas. Biogenic gas is formed with the help of methanogenic organisms that is present in marshes, bogs, landfills, and shallow sediments. Thermogenic gas is formed from organic matter that is buried in the deeper earth where the temperature and pressure are very high.
The organic pathway of the carbon cycle is the pathway in which carbon moves from atmosphere, through producers, herbivores and other organisms in the ecosystems, and converted back to the atmosphere.
In geological pathway, carbon moves from the atmosphere, through the ocean to rocks and the mantle, and then back to the atmosphere.
inherited traits are governed controlled by
Please help me I beg you please help
Answer:
A-T
T-A
T-A
C-G
A-T
G-C
G-C
C-G
T-A
A-T
Answer:
ATTCAGGCTA= TAAGTCCGAT
Explanation:
adenine pairs with thymine with 2 hydrogen bond in DNA and cytosine pairs with Guanine with 3 hydrogen bonds .
the epicenter of an earthquake is:
A. along a fault
B. the same as the focus
C. directly above the focus
D. directly below the focus
Answer:
I'm positive its C :)
Explanation:
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‼️‼️‼️‼️‼️
which population is most likely to increase as a result?
A. deer
B. mouse
C. owl
D. Hawk
Answer:
A. Deer
Explanation:
cause only mountain lions eat deers. without them theyll increase.
What is the universe made of
Answer:
composition
Explanation:
the universe is composed almost completely of dark energy, dark matter , and ordinary matter
Answer: matter , atoms
Explanation:
7. In a heterozygous person, which allele will actually be expressed (seen) in the phenotype? O dominant O recessive O both
Answer:
both... I think... Is there more context?
Explanation:
Hope this helped! Good luck! :)
(GIVING BRAINLIEST!!)
Due to altitude, you might find snow here during the summer months.
A) By a lake
B) In the forest
C) In the ocean
D) On a mountain
Answer:
D
Explanation:
Since the temperature is colder at a higher altitide you can use that knowledge to think about how high these places are relative to eachother. You can then take the highest one for your answer
The upwelling of deep ocean currents in some areas results in _________________.
Group of answer choices
A. nutrient-rich water
B. rough seas
C. a decrease in marine life
D. flooding on the coasts
Answer:
a
Explanation:
i took this
PLZ HELP! WILL MARK YOU BRAINLIEST!
Which of the following are associated with the integumentary system?
a. helps support the body
b. encloses internal body structures
c. site of many sensory receptors
d. melanin production
Answer:
melanin production
Explanation:
it occurs in the hair or skin
how many cells are in each phase and whats the percent of the cells
What is the difference between flu viruses and the measles virus?
Answer:Influenza and measles are viruses that both cause respiratory symptoms. The typical measles rash does not appear for 2-4 days, so during influenza season, symptoms of early measles can be confused with influenza.
Explanation:
Explanation:
Vaccines for both measles and flu already exist, however the flu vaccine must be updated because of the virus's ability to change and adapt in order to invade cells in the human body. The goal of researchers was to find genes in each virus that cannot survive changes.
By comparing two similar viruses which attack the body in similar ways through the lungs, researchers confirmed that the measles virus is much less open to evolutionary change by using an experimental technique called insertional mutagenesis to change the genes of each virus.
An area of land that is not used by humans for agriculture, industry, or habitation is called __________.
A)
wilderness
B)
rangeland
C)
public land
D)
sustainable forest
E)
private land
Explanation:
range land....,....,,...................
Sloths spend most of their time living in trees. They are considered __________ animals.
A)
folivorous
B)
epiphytic
C)
zoning
D)
arboreal
E)
browsing
In rabbits, straight ears (E) are dominant to floppy ears (e). Two rabbits are crossed, and 50% of their offspring have floppy ears. Which cross represents the genotypes of the parents?
Which of the following answers is NOT correct with regard to convection currents?
A. Convection currents in magma drive plate tectonics.
B.Convection currents in magma are a result of density differences.
C. Convection currents play a role in the movement of Earth’s inner core.
D. Convection currents in magma are caused by temperature differences.
Answer: C....Convection currents play a role in the movement of Earth’s inner core
The statement which is not correct with regard to convection currents is as follows:
Convection currents play a role in the movement of Earth’s inner core.Thus, the correct option for this question is C.
What is Convection current?Convection current may be defined as a procedure that significantly involves the movement of energy from one place to another. It is basically the existence of current in a fluid through convection.
The inner core of the earth has appeared as solid as compared to other parts like the crust and mantle. Most liquid particles are definitely found on the mantle of the earth's surface.
Due to the presence of excessive liquid particles and compounds, the convection current is significantly noticed there.
Apart from this, magma is also a fluid that derives current through convection. It produces in a number of ways like magma driving plate tectonics, density differences in the magma, and temperature differences.
Convection currents are basically the movement of fluid with respect to temperature or density difference within the material.
Therefore, the correct option for this question is C.
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HELP! I NEED THE ANSWER TO THIS QUESTION AS FAST AS POSSIBLE.
Which of the following is a source of genetic variation in sexually-reproducing organisms?
A.
meiosis
B.
mitosis
C.
translation
D.
all of these
2. Which atom in the water molecule is negatively charged?
Answer:
oxygen atom
Explanation:
The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms. When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule.
Answer:
The oxygen
Hydrogen is positive
Explanation:
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How do living organisms maintain homeostasis within their bodies?
Answer:
The body regulates those levels in an example of homeostasis. When levels decrease, the parathyroid releases hormones. If calcium levels become too high, the thyroid helps out by fixing calcium in the bones and lowering blood calcium levels. The nervous system helps keep homeostasis in breathing patterns.
Explanation:
Hope this helps :)) Please mark brainliest :))
Answer:
Look below.
Explanation:
They maintain homeostasis by regulating temp, glucose, toxins, blood pressure, and pH.
TEST - chapter 8
32 of 32
POSSIBLE POINTS: 3
What are the three factors that affect the rate of photosynthesis? (Hint: These are clearly listed toward
the end of your notes).
Answer:
light intensity, carbon dioxide concentration and temperature
though water is a big one too but would be 4th on the list imo
CO2 is an interesting one as it's amounts go down precipitately over say a corn field or other mass of photosynthesizing organisms during the day and increases at night when photosynthesis stops
Explanation:
1. What does H.I.P.P.O. stand for? Habitat destruction, Invasive species, pollution, population Increase and
over population
over production
over use
over exploitation
Human,increase population and Overharvesting
Yalll are smart right well I am give you 50 POINT lol you have to do this correctly :3
Answer:
Top to bottom: 5, 3, 2, 4, 1
Explanation:
I'll take a shot! Here I go!
5 (Sun) = top; we get all our energy from the sun
Then 3 (plants); plants can convert sunlight into food for themselves via photosynthesis
Then 2; we're talking about herbivores that eat plants, right?
Then 4; these are probably~ carnivores
Then 1; when a living thing dies, these guys consume the corpse and return the energy to the ecosystem
Have a great day!
Answer:
Sun
Primary Producers
Primary Consumers
Secondary Consumers
Decomposers
Explanation:
Energy coming from the sun is converted into chemical energy (or glucose) by plants. Primary consumers (herbivores) eat those plants and gain the energy they produced. Secondary consumers (carnivores probably) eat the primary consumers and gain that energy. Then they die and decomposers (fungi) return their energy into the soil.
what makes some melt? What happens to the particles in snow as it melts?
