ZoologyA single set of chromosomes is found in(i) Secondary oocyte(ii) Spermatogonium(iii) Primary spermatocyte (iv) Secondary Spermatocyte(v) Spermatid

A single set of chromosomes is found in

(i) Secondary oocyte

(ii) Spermatogonium

(iii) Primary spermatocyte 

(iv) Secondary Spermatocyte

(v) Spermatid

  1. A

    ii, iii, iv and v 

  2. B

    i, iv and v 

  3. C

    Only iv and v 

  4. D

    Only v

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    Solution:

    Let's find out the number of chromosome in each of the following- 

    i. Secondary oocyte - Haploid or contains a single set of chromosome

    ii. Spermatogonium - Diploid cells, each contains 46 chromosome (23 pairs) 

    iii. Primary spermatocyte -  Diploid because they produced by mitosis and have 46 chromosome.

    iv. Secondary spermatocyte - Haploid because each primary spermatocytes goes through the first meiotic division to produce two secondary spermatocytes each with 23 chromosome. 

    v. Spermatid - Haploid male gametid results from division of secondary spermatocyte. 

    Hence, germinal cell, secondary spermatocyte and spermatid contains only one set of chromosome or haploid in nature. 

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