The comparison of embryos across species reveals the conservative nature of the genes responsible ...

The comparison of embryos across species reveals the conservative nature of the genes responsible for ____.
  a. food procurement
  b. reproductive behavior
  c. embryonic development
  d. embryonic size
  e. embryonic intelligence

Question 2

The Dlx gene encodes a transcription factor that signals clusters of embryonic cells to ____ and gives rise to an
  appendage.
  a. fold into the cardiac muscle
  b. protrude from the body
  c. form reproductive structures
  d. induce apoptosis in cells lining the appendages
  e. develop into the immune system