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NEET UG BIOLOGY MCQ: HUMAN REPRODUCTION
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2n=16 is a primary spermatocyte, which is in metaphase of first meiotic division. What shall be the total number of chromatids in each of the secondary spermatocyte?
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Correct option: C
16
Option C (16) is correct because a primary spermatocyte with 2n=16 undergoing meiosis I has 16 chromosomes, each with two chromatids (32 chromatids total). After meiosis I, each secondary spermatocyte receives half the number of chromosomes (n=8), but each chromosome still consists of two chromatids, resulting in 16 chromatids per secondary spermatocyte.
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Some important events in the human female reproductive cycle are given below. Arrange the events in proper sequence.
I.Secretion of FSH
II.Growth of cropus luteum
III.Growth of the follicle and oogenesis
IV.Ovulation
V.Sudden increase in the levels of LH
Which cells produce the enzymes that allow embryonic implantation? Find out the mismatch from the following homologous organs. In females, secondary oocyte completes meiosis II during Which type of immuno globin is/are abundantly found in foetus?
I.Secretion of FSH
II.Growth of cropus luteum
III.Growth of the follicle and oogenesis
IV.Ovulation
V.Sudden increase in the levels of LH
Which cells produce the enzymes that allow embryonic implantation? Find out the mismatch from the following homologous organs. In females, secondary oocyte completes meiosis II during Which type of immuno globin is/are abundantly found in foetus?