A human embryo is known as a fetus after ________ weeks.
A) 2
B) 4
C) 10
D) 12
E) 16
Correct Answer:
Verified
Q23: A developing human is considered an embryo
Q24: Based on experiments with amphibian embryos, Spemann
Q25: Induction refers to:
A)the pushing in of cells
Q26: The structure produced by cleavage of a
Q27: The birth defect spina bifida results in
Q29: In humans, implantation occurs:
A)just prior to fertilization.
B)immediately
Q30: At what stage does a human embryo
Q31: Cells differentiate during development because:
A)each cell contains
Q32: The umbilical cord of a mammal connects
Q33: What makes the cells of a developing
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