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Biology

1 answer:

Phoenix [80]3 years ago

3 0

Answer:

Explanation:

Arteries and arterioles (small arteries) have muscular walls. They're the main blood vessels involved in vasoconstriction. ... Capillaries are tiny, thin-walled blood vessels that can't constrict.

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How do mutations increase genetic diversity in populations?

umka2103 [35]

Flow of individuals in and out of a population introduces new alleles and increase genetic variation within that population. Mutations: changes to an organisms DNA that create diversity within a population by introducing new alleles.

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4 years ago

Explain what happens during reverse transcription.

PIT_PIT [208]

Answer:

First of all, the reverse transcriptase synthesizes viral DNA from viral RNA, and then from newly made complementary DNA strand. The second replication process occurs when host cellular DNA polymerase replicates the integrated viral DNA. ... Therefore, mutation can occur during one or all of these replication steps.

Explanation:

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3 years ago

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Where does diversity come from?

uranmaximum [27]

Diversity comes from people being of different cultures. Like if people from Mexico come into the US, that would create diversity, because were aren't of the same culture.

Diversity can be different races, different nationalities, or even different ages. Anything that is different from the majority creates diversity.

Hope this helps you out!^_^

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4 years ago

External ear structure that helps to localize the direction from which sound arises

Step2247 [10]

The external ear structure is called the Pinna.

The Pinna helps to channel sound waves into the ear.

Many animals have the ability to move their pinna towards the direction of sound.

I have attached an image of a dog's ear to show you the external structure called the Pinna.

I hope this helps! I'm happy to answer any other questions you might have :)

[Image sourced from: https://www.msdvetmanual.com/dog-owners/ear-disorders-of-dogs/ear-structure-and-function-in-dogs]

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4 years ago

Which of these organisms is not an omnivore?

AnnZ [28]

Answer: c Blue whale

Explanation:omnivore is

an animal or person that eats food of both plant and animal origin.

Blue Whale is a carnivorous animal that despite the fact that it doesn't have proper teeth, survives on a diet that is mainly comprised of krill and small crustaceans, along with the occasional small fish.

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3 years ago