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xr xr
wrote...
Posts: 479
Rep: 1 0
6 years ago
Implantation begins how many days after fertilization in humans?
  a. 1 day
  b. 7 days
  c. 14 days
  d. 21 days
  e. 28 days

Question 2

The developmental stage at which implantation occurs is the ____.
  a. blastocyst
  b. zygote
  c. embryo
  d. fetus
  e. fertilized egg
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StewartStewart
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Posts: 306
Rep: 1 0
6 years ago
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xr Author
wrote...
6 years ago
Bravo! This is awesome
wrote...
6 years ago
Glad my efforts were helpful
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