A scientist is trying to determine the relationship between clams, snails, and squid. When she generates a molecular clock,

Biology

1 answer:

Oduvanchick [21]3 years ago

5 0

Answer:

B. Clams and squid have been evolving separately for a shorter time than clams and snails.

Explanation:

A molecular clock is a genetic tool often used in Evolutionary Biology which states that the genetic material and proteins evolve over time at a relatively constant rate. Therefore, the differences in their genome depend on the common ancestor both species share.

In this case, clams and squid are more closely related than clams and snails. Therefore, they have been evolving separately for a shorter time than clams and snails.

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Answer:

True (although question is not clear enough)

Explanation:

Adaptive radiation occurs when organisms evolve from the same ancestor. This process takes place as a result of environmental changes or when they are introduced to or colonize a new environment. These changes become challenges that force these individuals to adapt to these new conditions.

Therefore, this results into a faster evolution that creates different new forms that possess a diversity of variations adapted to their new feeding habits, environment, and behavioral needs.

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