When does a zygote become a multicellular creature?
A) at fertilization
B) when cleavage begins
C) when organs begin to form
D) when the heart begins beating
E) at birth
Correct Answer:
Verified
Q1: The process of cleavage initially produces a
A)
Q2: Which stage in development occurs first?
A) cleavage
B)
Q3: The nervous system develops primarily from
A) ectoderm.
B)
Q5: How many days after fertilization does the
Q6: How many differentiated cell types exist in
Q7: The heart, muscles, bones, and blood develop
Q8: If an experimenter interferes with the mesoderm
Q9: The mesoderm is responsible for the formation
Q10: At the end of gastrulation, which of
Q11: In the following list of developmental events,
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