Which of the following events happens first in the development of a new organism?
A. A zygote undergoes mitosis.
B. A blastocyst implants into the uterine wall.
C. A morula is formed.
D. A sperm fertilizes an egg to form a zygote
A sperm fertilizes an egg to form a zygote. - happens first in the development of a new organism.
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Asked 3/12/2019 11:01:04 AM
Updated 2/8/2023 12:18:46 PM
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anthony23 [2/8/2023 12:18:46 PM]
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