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labwork [276]
3 years ago
7

6. Marcus's genotype for eye color is bb. Olivia has brown eyes, but she is heterozygous for the trait.

Biology
2 answers:
Degger [83]3 years ago
7 0
The answer is going to be a because I thinks it’s going to be a
Sidana [21]3 years ago
6 0

Answer:

i believe that the awnser is A

Explanation:

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During drought years, seeds with thin coats are more likely to desiccate (dry out) and not be able to germinate
Morgarella [4.7K]

Directional selection favors one of the extreme phenotypes. Option B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.

<h3>What is directional selection?</h3>

Directional selection increases in the proportion of individuals with an extreme phenotypic trait.

There must be a selective pressure or environmental pressure acting on populations to lead the species to increase the number of individuals expressing that extreme phenotype.

This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.

In the exposed example the environmental pressure is drought during several years.

Drought periods decreases the fitness of plants that produce thin seed coats because they dehydrate before germinating.

Originally the population expressed both types of seeds. But after the drought pressure, only plants that produce seeds with thicker coats got to survive and reproduce.

The correct option is B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.

You can learn more acout directional selection at

brainly.com/question/12226774

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5 0
2 years ago
Driving down the road, you hit an insect. How does the force your car exerts on the insect compare to the force the insect exert
il63 [147K]
When reading your task I have immediately recognized Newton's third law. And ccording to this, without any doubts I can assume that <span> both car and insect exert forces of same magnitude on each other. That's all you need to solve this task. I am pretty sure you will find it helpful. Regards!</span>
4 0
3 years ago
Please Help!!!!!!!!!!!!!!!???!! 2 markkssssssss
Dimas [21]

Answer:

leaves, roots, stem

Explanation:

hope it helps

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3 years ago
Which one of the following choices is not considered an active form of vitamin a?
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The following that is not considered as a form of Vitamin A from the give choices is "retinalogic." Retinal is a molecule important for our vision. Retinoic acid regulates the functions of Vitamin A for muscle development. Lastly, retinol is used as a component in dietary supplements.
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