Answer:
23 chromosomes
Explanation:
Human sex cell (either male or female sex cell) is haploid and consists of half of the total number of chromosomes within a cell.
So if there are 46 chromosomes in a cell, a human egg will have exactly half of it i.e 23 chromosomes.
During mating, 23 chromosomes are donated by both father and mother to their offspring (diploid zygote) to constitute 46 chromosomes set.