If a chick embryo has a defect that prevents blood vessels from forming in its extraembryonic mesoderm, which extraembryonic membrane(s) will be affected?

Name: If a chick embryo has a defect that prevents blood vessels from forming in its extraembryonic mesoderm, which extraembryonic membrane(s) will be affected?
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Question

Quizplus · Accepted Answer

The allantois and yolk sac are both involved in the formation of blood vessels in the extraembryonic mesoderm, so a defect in blood vessel formation would affect both these membranes.

If a Chick Embryo Has a Defect That Prevents Blood