Answer:
The F1 progeny is completely heterozygous for the loci of interest since they were obtained by mating between two pure-breeding plant lines. In the next generation, the backcross progeny will have homo-zygous individuals and therefore they will be more variable, resulting from meiosis in F1 hybrids
Explanation:
An F1 resulting from the cross between two pure-breeding plant lines will produce all hybrid individuals, all of them genetically (and phenotypically) identical. Meiosis in F1 hybrids is well known to produce homo-zygous genotypes and thus increases genetic diversity in progeny. For instance, for a single locus, the expected ratio of genotypes obtained from crossing two heterozygous parents is 1:2:1, i.e., one homo-zigous dominant individual, two heterozygous individuals (genetically identical to the parents) and one homo-zygous recessive individual; while the expected phenotypic ratio is 3:1 (i.e., 3 dominant expressing: 1 recessive expressing).
Which of the following best describes the use of population models in biology? (SC.7.N.3.1
O They are generally easy to construct.
O They can represent reality precisely.
They are used when no observations have been made.
O They can help predict outcomes
(25 points)
Answer:they can help predict outcomes
Explanation:
The animal that eats another is known as
Answer:
A predator
Step by step explanation:
Answer:
Carnivore or predator
Explanation:
Carnivores are animals that eat other animals. The word carnivore is derived from Latin and means “meat eater.”
Hope it helps u and sorry if it doesn't
.What are two reasons hypoxic tumors are
are resistant to chemotherapy?
Answer:
chemotherapy target rapidly proliferation cells and there is poor penetration of many drugs to tumor cells that are located distal to functional blood vessels hypoxic cells are also likely to resistant to chemotherapy
Relate plant structure and function to the process of photosynthesis and respiration
Answer: Photosynthesis is a process through which green plants prepare their food by using carbon dioxide and water as reactants in the presence of sunlight energy. The food produced in the form of carbohydrate. Respiration is the process in which the biochemical oxidation of the food occurs.
Explanation:
The plant structures like leaves are specialized for performing the process of photosynthesis. These leaves have chlorophyll pigment which traps the light energy from sun which is required for splitting the molecules of water in the process of photosynthesis. Respiration occurs through stomata in leaves. But it also occurs in stems through lenticels and in specialized roots called pneumatophores via tiny pores.
What is most likely observed when the temperature of water increases and researches 100c ? A. The water begins to harden . B The water begins to form water vapor. C The water level begins to increase. D the water begins to melt.
Answer:
C should be your answer!! Mark Brainliest pls!
Explanation:
Which sections are part of a career plan? Select all that apply.
career definition
career requirements
current status
short-term goals
intermediate goals
economic obstacle
Answer:
career definition
career requirements
current status
short-term goals
intermediate goals
economic obstacle
Explanation:
Answer:
career definition
career requirements
current status
short-term goals
intermediate goals
economic obstacle
Explanation:
HELPPPP
We have half of our genetic material from our mom and half from our dad
agree/disagree
Answer:
Agree. We Get One Chromosome from each Parent
Explanation:
Which method is most likely to reduce soil loss?
A pH testing
B. crop rotation
C. remote sensing
D. contour plowing
Answer:
B
Explanation:
Answer: it's B
Explanation:
I need help on homework
Answer:
i wanna say the second to last one
Explanation:
Which country loaded botulism toxins into bombs? Why is botulism of less concern than anthrax or plague?
Answer:
Botulism is a rare, but life threatening infection caused by the bacteria Clostridium botulinum which spreads through contaminated food, soil, or through open wounds. Ingestion of bacterial spores and toxins are the main reasons behind the symptoms. Symptoms vary depending on the type of botulism. Medications and infected tissue removal methods are available to remove the bacterial toxins.
Explanation:
The landforms indicated by the arrows in the image are common features off the coast of Mississippi. What are these features?
A)
coral reefs
B)
barrier islands
9
continental shelf
D)
submerged mountains
Answer:
b) barrier islands
Explanation:
I looked up Mississippi barrier islands and they were a thing.
Genetic mutations can occur during meiosis and be passed on to the next generation. What is a benefit of this process?
Answer:
The benefit of this is let's say theoretically you're mom got small pox at age 10 and gave birth to you at age 35 her DNA was built up to withstand small pox if she gets it again. If a small amount of her DNA is in you then chances are she passed that immunity to you and you have mutation for the better.
Answer: Genetic variation is increased.
Explanation: Just took the test and it was right.
Fibroblasts can be placed on thin sheets of silicone rubber. Under normal circumstances, fibroblasts exert sufficient tension on the rubber so that it visibly wrinkles. Explain how the ability of fibroblasts to wrinkle rubber would change if the cells were treated with a permeable form of C3 transferase, a toxin (from the bacterium Clostridium botulinum) that covalently modifies an amino acid in Rho. The modification renders Rho unable to bind to proteins that it would normally bind to when active.
Answer:
C3 transferase decreases Rho activity and contractility by decreasing the number of stress fibers and thus also reducing wrinkles
Explanation:
Rho protein is a small GTPase, i.e., an enzyme that binds GTP to hydrolyze it to GDP, which is known to mediate the formation of stress fibers and focal adhesion. Rho protein is involved in diverse cellular functions including, among others, adhesion, motility, and division by reorganization of the actin cytoskeleton. The bacterial toxin C3 transferase derived from Clostridium botulinum is able to lock Rho in an inactive state. C3 transferase adds an ADP-ribose to Rho, thereby leading to the accumulation of a Rho-guanine nucleotide dissociation inhibitor (GDI) complex in the cytoplasm. In consequence, C3 transferase functions to decrease contractility by blocking Rho activity, decreasing the number of stress fibers and leading to a reduction in wrinkles.
During the rock cycle, ______________ follows erosion. *
Answer:
deposition
Explanation:
Hope this helps and have a great day!!!!
[tex]\small\sf{During\: the\: rock \:cycle, \:{\underline{\bf{\red{\:\:\:\:Deposition\:\:\:\:}}}}follows\: erosion.}[/tex]
During composting, what happens to the initial ingredients such as eggshells, leaves, and cardboard?
A. planting
B. pollution
C. fertilization
D. decomposition
Answer:
Decomposition
Explanation:
NEED FAST PLS!!! which option identifies the argument refuted in the following scenario?
Lucy possesses a gene for melanoma she chose has to stay out of the sun
A. genetic information is purely internal influenced
B. dominant traits are always passed from parent to child
C. genes are incapable of mutation during transference
D. it is impossible to partially inherit a genetic trait
Answer:
D. it is impossible to partially inherit a genetic trait
Explanation:
1. What causes community resilience?
Answer:
Community resilience is the sustained ability of a community to use available resources to respond to, withstand, and recover from adverse situations. This allows for the adaptation and growth of a community after disaster strikes. Communities that are resilient are able to minimize any disaster, making the return to normal life as effortless as possible. By implementing a community resilience plan, a community can come together and overcome any disaster, while rebuilding physically and economically.
Explanation:
Why is transcription both the same and different between chloroplasts and mitochondria?
Answer:
because they have similar functions
Plz help me!
The amount of shine a mineral has describes the mineral's
A) hardness
B) luster
C) color
D.crystal size
9. Plants can reproduce
A. sexually and asexually.
B. constantly
C. only by cutting or budding.
D. only using pollination.
Answer:
A. sexually and asexually
Explanation:
A. Sexually and Asexually
Explanation:
there is a way they can have sexual reproduction by one parent
Many of the hardest rocks are metamorphic rocks. Why do you think metamorphic rocks are harder than sedimentary rocks?
Answer:
Metamorphic rocks are almost always harder than sedimentary rocks. They are generally as hard and sometimes harder than igneous rocks. They form the roots of many mountain chains and are exposed to the surface after the softer outer layers of rocks are eroded away.
Because their mineral grains grew together tightly during metamorphism, they're generally strong rocks.
As a population grows past the ecosystem's carrying capacity the size of the population will (blank) until the size of the population stabilizes at a constant level.
What is the blank??
thx!
How does the shape of organ relate to gene expression?
Answer:
The alleles for MADS-box genes get expressed at different levels. They form the “L” complex and the “SP” complex. These are a group of proteins that determine the shape of the petals. The more they L complex is expressed, the high the probability that the petals of the flower will form the ‘lip’ and the high the SP complex is expressed then the high the likelihood of dominant petals.
Explanation:
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2. 2,3-bisphosphoglycerate is an allosteric inhibitor of oxygen binding to hemoglobin. a. Acclimatization to high altitude involves numerous physiological and biochemical changes, including an increase in the concentration of 2,3-bisphosphoglycerate in red blood cells. Explain why the 2,3 bisphosphoglycerate concentration increases at high altitude. b. The 2,3-bisphosphoglycerate concentration in maternal red blood cells also increases during pregnancy. Why
Answer:
A. At high altitude, increase in 2,3-bisphosphoglycerate (BPG) ensures that enough oxygen is delivered to the tissues despite the low oxygen saturation levels there.
B. An increase in 2,3-bisphosphoglycerate (BPG) is necessary during pregnancy as it ensures that both the pregnant woman and developing fetus have enough oxygen for their metabolic needs.
Explanation:
Atmospheric pressure is low at high altitudes with the result that oxygen molecules in the air are further apart. The reduction of oxygen availability in the air thus reduces the oxygen saturation in the blood and brain. Oxygen saturation levels refer to the extent hemoglobin is bound or saturated to oxygen.
2,3-bisphosphoglycerate (BPG) is an allosteric inhibitor of oxygen binding to hemoglobin. At low concentration, oxygen delivery to tissues is low while at hgh concentrations, oxygen delivery to tissues increases. It ensures that oxygen bound to hemoglobin in blood from the lungs is delivered to the tissues. Thus, at high altitude, increase in BPG ensures that enough oxygen is delivered to the tissues despite the low oxygen saturation levels there.
B. During pregnancy, there is a significant increase in oxygen demand. This is due to a 15% increase in the metabolic rate and a 20% increased consumption of oxygen as the developing fetus obtains nutrients and oxygen from the mother's blood.
An increase in 2,3-bisphosphoglycerate (BPG) is necessary during pregnancy as it ensures that both the pregnant woman and developing fetus have enough oxygen for their metabolic needs.
Which of the following is an example of planning for the future to avoid environmen damage?
A. Creating a landfill
B. Cleaning up an oil spill
C. Mining aluminum from the earth’s crust
D. Evaluating potential effects of development
Answer:
B is the answer
cleaning up an oil spill
Use the data you calculated in parts A and B to explain why gypsy moths could threaten biodiversity in the ecosystem.
Answer: edmentum
The number of gypsy moths is growing exponentially in a short period of time, which suggests that there are few predators controlling their population. This growth also aids the exponential destruction of shrubs and trees, which native species rely on for food and shelter. Increased competition for these resources will likely cause the population of many native species to decline. Over time, some of the native species may die out or leave the area, leading to a decline in biodiversity.
Answer:
The number of moths are growing fast in just a short period of time, this means that their poulation is being controlled by their predators. As the population of the moths continue to grow, there will be an increase in the destruction of crops and trees within the moth's environment. Over time some of the species may die out and cause them to relocate and cause a decrease in biodiversity.
Explanation:
I put this answer in my own words, so you may copy and paste it.
The caterpillar of the Gypsy Moth provokes tree damage but since it is the only stage of the life cycle that utilizes food. When the population of feeding caterpillars reaches pandemic proportions, they can completely defoliate trees.
What is a biodiversity?The term biodiversity pertains to the diversity of life on Earth at all levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that enable life to exist.
The caterpillar of the Gypsy Moth provokes tree damage but since it is the only stage of the life cycle that utilizes food.
When the population of feeding caterpillars reaches pandemic proportions, they can completely defoliate trees.
Thus, this way gypsy moths could threaten biodiversity in the ecosystem.
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Select the statement which best describes the characteristics a baby raccoon will inherit from a parent. (2 points)
zennie / iStock 2018
A striped tail, black fur across its eyes, and sharp claws
Brown fur and the ability to search for food in groups
Four legs and the need to hibernate when the weather is cold
Webbed feet with claws and fur, and white fur on its eyes
Answer:
they furry
Explanation:
link to answer is here
Answer:
A striped tail, black fur across its eyes, and sharp claws
Explanation:
got it right on my quiz
Two scientists do not agree which type of grocery bag is better for the environment. What is the most likely outcome of their disagreement?
Answer:
The most likely outcome of their disagreement is the use of cloth tote bags
Explanation:
Help me quick! I'll try to give Brainlyest
Answer:
A
Explanation:
Answer: it's c
Explanation: :)
PLEASE ANSWER THIS QUESTION :(
Answer:
○ 3, 4 .............ghhg
Explanation:
because......
