The Primitive Streak in a Bird Is the Functional Equivalent

question 21

Multiple Choice

The primitive streak in a bird is the functional equivalent of

• A) the lip of the blastopore in the frog.
• B) the archenteron in a frog.
• C) polar bodies in a sea urchin.
• D) the notochord in a mammal.
• E) neural crest cells in a mammal.

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