The _______ provides nourishment for the embryo during chick development.
A) umbilical cord
B) allantois
C) yolk sac
D) embryo
E) choroin
Correct Answer:
Verified
Q26: A pregnancy test is based on the
Q27: Genes that determine how segments develop during
Q29: The _ develops into the fetal portion
Q31: The _ is responsible for gas exchange
Q33: A homeotic gene codes for a(n) _
Q34: In human development,the _ is the site
Q37: The presence of the same homeotic genes
Q38: Which of the following is NOT correct?
A)Embryonic
Q42: As we become older,the
A) skin becomes more
Q44: The _ in fetal circulation allows blood
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