Descent with Modification Video Lessons

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Problem: While examining a skeleton of a snake you notice that it has a pelvic girdle and tiny limb bones like other reptiles. The most likely explanation for the presence of a pelvic girdle and small bones in this snake is:a. This skeleton is a transitional formb. They are a developmental mutationc. They are vestigial structuresd. They are analogous to bird wings

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Problem Details

While examining a skeleton of a snake you notice that it has a pelvic girdle and tiny limb bones like other reptiles. The most likely explanation for the presence of a pelvic girdle and small bones in this snake is:

a. This skeleton is a transitional form

b. They are a developmental mutation

c. They are vestigial structures

d. They are analogous to bird wings

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