Topics:
Animal Refresher, Animal Reproduction
Number of Primary Spermatocytes from One Spermatogonium
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Question (English)
How many primary spermatocytes are produced from one spermatogonium?
- 1
- 4
- 16 ✓ Correct
- 64
Explanation:
Correct Answer: 16
One spermatogonium undergoes 4 successive mitotic divisions (2⁴ = 16) to produce 16 primary spermatocytes. These primary spermatocytes then undergo meiosis to produce 64 spermatozoa.
Complete Spermatogenesis Cascade from 1 Spermatogonium
- 1 Spermatogonium → (4 mitoses) → 16 Primary spermatocytes
- 16 Primary spermatocytes → (Meiosis I) → 32 Secondary spermatocytes
- 32 Secondary spermatocytes → (Meiosis II) → 64 Spermatids
- 64 Spermatids → (Spermiogenesis) → 64 Spermatozoa
Key Numbers to Remember
- 1 Spermatogonium → 16 primary spermatocytes → 64 sperm
- 1 Primary spermatocyte → 4 sperm
- 1 Primary oocyte → 1 ovum
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Animal Reproduction. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
