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Question

Choose the correct answers from the alternatives given.
Which of the following is common to both avian and mammalian development?

A
Holoblastic cleavage
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B
Primitive streak
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C
Trophoblast
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D
Yolk plug
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Solution

The correct option is B Primitive streak
The primitive streak is a structure that forms in the blastula during the early stages of avian, reptilian and mammalian embryonic development
So, the correct answer is 'Primitive streak '

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