Biology

Question

4. The scientific theory of evolution is supported by several lines of evidence, including

comparative anatomy. The diagram below compares the forelimb (arm) bone structures of four

different animals. How does the anatomy of these mammals

support the theory of evolution?

These mammals have the same basic forelimb bone

structure because they have kept the traits of their shared

common ancestors

These mammals have different sizes and lengths of

Forelimb bones because of random mutations passed from

their parents

c.

These mammals originally had forelimb bone

HUMAN WHALE DOG

BAT

structures that were different, but as the mammals used the forelimbs for similar purposes, their

bone structures began to look similar

d

These mammals were born with forelimb bone structures that were similar in appearance,

but as the mammals used the forelimbs for different purposes throughout their lives, their bone

structures changed

Answer

d. These mammals were born with forelimb bone structures that were similar in appearance, but as the mammals used the forelimbs for different purposes throughout their lives, their bone structures changed.

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The diagram of the four different animals' forelimb bone structures supports the theory of evolution by showing that the mammals have similar bone structures, even...