Final answer:
The zygote has 46 chromosomes within the first twenty-four hours after fertilization.
Explanation:
In the first twenty-four hours after fertilization, the zygote has 46 chromosomes. Upon fertilization, a diploid zygote is formed, containing 23 chromosomes from each parent. The zygote undergoes mitosis, dividing and multiplying, forming more cells that eventually differentiate to create a developing human being.
Learn more about zygote chromosomes development here:
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