National League for Nursing (NLN PAX) Practice Exam

Question: 1 / 495

How many chromosomes does a human zygote typically contain?

46

A human zygote typically contains 46 chromosomes, which is the correct answer. The zygote is formed when a sperm cell fertilizes an egg cell, and each of these gametes contributes half the number of chromosomes. In humans, each gamete has 23 chromosomes. When they combine during fertilization, the total number of chromosomes in the zygote becomes 46. This number represents the diploid chromosome number, which is essential for the development of a new individual, as it allows for the proper pairing and functioning of genes in the organism. The zygote will then continue to divide and develop, eventually leading to a fully formed human being with the same chromosomal count.

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