Which feature would you predict would be found in monotremes (egg-laying mammals) ?
A) The eggs have little or no yolk.
B) A trophoblast is present in the embryo.
C) The hypoblast contributes to a placenta.
D) The embryo derives nourishment from the maternal circulation.
E) The allantois functions as a reservoir for nitrogenous waste.
Correct Answer:
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