Biology, 04.12.2019 06:31 ultimateapes

Which of the following events happens first in the development of a new organism?
a. a morula is formed.
b. a blastocyst implants into the uterine wall.
c. a sperm fertilizes an egg to form a zygote.
d. a zygote undergoes mitosis.

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Which of the following events happens first in the development of a new organism?
a. a morula...