Question : Which among the following has 23 chromosomes?

1.	Question : Which among the following has 23 chromosomes?
Answer» SPERMATOGONIA Zygote Secondary oocyte Oogonia Solution :There AR 23 chromosomes in secondary oocyte. In ovary, during the PROCESS of oogenesis, it is produced by meiotic division of PRIMARY oocyte. Oogenesis occurs in fetal ovary in pre embryonic stage of female and number of oogonia are decided before the birth of female child. No more oogonia are forme and added after birth. Spermatogonia are immature male germ cells. They produce spermatozoa. Each spermatogonium is diploid (2n) and has the 46 chromosomes. During the development of FOETUS some cells of germinal epithelium of ovary undergo meiotic division and produce gametes cells known as oogonia. Oogonia are diploid (2n) and possesses 46 chromosome.

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