Originally Posted by
Gulia
what is yolk in emryo?explain in detail.
what is its role ?
please explain mechanism of gastrulation?
Gulia
This should be posted in a separate thread, since it's a new question.
Also, it sounds like a test or homework question. We can help you, but won't do it for you. I will help you if you start working on these questions yourself.
How do you think the yolk would be useful to a chick embryo?
Hint: the yolk is high in fat and protein.
Try to answer and I will give you feedback.