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timofeeve [1]
3 years ago
9

Which of the following events happens first in the development of a new organism? A. A sperm fertilizes an egg to form a zygote.

B. A morula is formed. C. A blastocyst implants into the uterine wall. D. A zygote undergoes mitosis.
Physics
2 answers:
Ipatiy [6.2K]3 years ago
8 0

Definitely the answer is A

This process called Fertilization

Juli2301 [7.4K]3 years ago
5 0
The development of a new organism begins with answer A, the sperm must fertlize an egg to form the zygote.
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