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Question
During spermatogenesis, how many primary spermatocytes will form 800 spermatozoa?
During spermatogenesis, how many primary spermatocytes will form 800 spermatozoa?
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Solution
The correct option is B 200
Spermatogenesis is the process of formation of sperm in males after they hit puberty. It occurs under the influence of various hormones.
During this process, spermatogonia (2n) multiply by mitotic division and increase in numbers. Some of the differentiated spermatogonia called primary spermatocytes (2n) undergo meiosis. A primary spermatocyte completes the first meiotic division (reduction division) leading to the formation of two equal, haploid cells called secondary spermatocytes (n). These cells have only 23 chromosomes each. The secondary spermatocytes undergo the second meiotic division to produce four equal spermatids (n) containing 23 chromosomes. Spermatids mature and form spermatozoa.
4 spermatozoa are formed by one primary spermatocyte 800 spermatozoa will be formed by1/4×800 = 200 primary spermatocytes.
Spermatogenesis is the process of formation of sperm in males after they hit puberty. It occurs under the influence of various hormones.
During this process, spermatogonia (2n) multiply by mitotic division and increase in numbers. Some of the differentiated spermatogonia called primary spermatocytes (2n) undergo meiosis. A primary spermatocyte completes the first meiotic division (reduction division) leading to the formation of two equal, haploid cells called secondary spermatocytes (n). These cells have only 23 chromosomes each. The secondary spermatocytes undergo the second meiotic division to produce four equal spermatids (n) containing 23 chromosomes. Spermatids mature and form spermatozoa.
4 spermatozoa are formed by one primary spermatocyte 800 spermatozoa will be formed by1/4×800 = 200 primary spermatocytes.
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(a) About 300 million spermatozoa may be present in a human male ejaculation at one time. Calculate how many spermatocytes will be involved to produce this number of spermatozoa.Join BYJU'S Learning Program
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