2.Human Reproduction
medium

પ્રથમ અર્ધસૂત્રીભાજન પછી નરજનન કોષ ......... માં વિભેદન પામે છે.

A

પ્રશુક્રકોષ

B

આદિશુક્રકોષ

C

પ્રાથમિક પૂર્વશુક્રકોષ

D

દ્વિતીય પૂર્વશુક્રકોષ

(AIPMT-2008) (AIPMT-1994)

Solution

(d) : During embryonic development the primordial germ cells migrate to the testis where they become spermatogonia. At pubertythe spermatogonia proliferate rapidly by mitosis. Some undergo growth phase to become primary spermatocytes that further undergo through meiotic division I to become secondary spermatocytes. After completion of meiotic division II the secondary spermatocytes produce spermatids which differentiate to form spermatozoa.

Standard 12
Biology

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