After fertilization, a zygote contains 46 chromosomes, comprising 23 pairs including autosomes and sex chromosomes.
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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