Answer :
Final answer:
After fertilization, a zygote contains 46 chromosomes, comprising 23 pairs including autosomes and sex chromosomes.
Explanation:
Zygote is formed with 46 chromosomes after the union of sperm and egg nuclei in humans. The zygote contains 23 pairs of chromosomes, including 22 autosomes and 1 sex chromosome pair. Gametes are haploid cells with 23 chromosomes each, contributing to the diploid condition of the zygote.
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