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STD 12 - 2. human reproduction — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 2. human reproduction1 Mark
MCQ
Primary spermatocyte differs from spermatogonium in
  • A
    Number of chromosomes
  • ✓
    Size and volume
  • C
    $DNA$ content
  • D
    Size of chromosomes
✓

Answer

Correct option: B.
Size and volume
b
Undifferentiated primordial germ cells undergo mitotic division to produce spermatogonia. Each spermatogonium grows to a large primary spermatocyte by obtaining nutrients from the nursing cells. The $DNA$ content remains same $(2 n)$ in both spermatogonia and primary spermatocyte.

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