AP BIOLOGY

Detailed explanation-1: -Secondary oocyte, ova, secondary spermatocyte and spermatids are haploid in number, each with 23 chromosomes.

Detailed explanation-2: -The secondary oocyte is the cell that is formed by meiosis I in oogenesis. Thus, it has only one of each pair of homologous chromosomes. In other words, it is haploid.

Detailed explanation-3: -Secondary spermatocytes are haploid (N) cells that contain half the number of chromosomes.

Detailed explanation-4: -The primary oocyte is a diploid cell & is formed from the oogonia/gamete mother cell by mitotic division. It gives rise to secondary oocytes after the meiosis-I division. These secondary oocytes are haploid. These secondary oocytes undergo meiosis-II to form haploid ovum.

Detailed explanation-5: -They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome.