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Question
During spermatogenesis, which stage is the first to contain haploid number of chromosomes?
During spermatogenesis, which stage is the first to contain haploid number of chromosomes?
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Solution
The correct option is C Secondary spermatocyte
The process which involves the formation of spermatozoa (sperms) from spermatogonia is called spermatogenesis.
The spermatogonia, diploid (2n) undergo mitosis continuously and increase in number. Some of them differentiate to form primary spermatocytes (2n).
The primary spermatocyte undergoes meiosis I to give rise to secondary spermatocytes which is haploid (n).
The secondary spermatocytes undergo meiosis II to form spermatids (n).
The spermatids undergo morphological changes to form the sperms or spermatozoa.
Hence, secondary spermatocyte is the first stage to contain haploid number of chromosomes.
The process which involves the formation of spermatozoa (sperms) from spermatogonia is called spermatogenesis.
The spermatogonia, diploid (2n) undergo mitosis continuously and increase in number. Some of them differentiate to form primary spermatocytes (2n).
The primary spermatocyte undergoes meiosis I to give rise to secondary spermatocytes which is haploid (n).
The secondary spermatocytes undergo meiosis II to form spermatids (n).
The spermatids undergo morphological changes to form the sperms or spermatozoa.
Hence, secondary spermatocyte is the first stage to contain haploid number of chromosomes.
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