Concept:P and Q are gametes, so both are haploid cells.Explanation:Skin cells are body cells and contain the diploid number: 2n=46.Gametes are formed by meiosis, which reduces the chromosome number by half.So each gamete has: n=246=23 chromosomes.Since P and Q are both gametes, each contains 23 chromosomes.Answer:23 and 23 (Option A).
