Biology Reproduction NUMS 2024
PMDC Verified Question 20 of 81
Which of the following would be produced as a result of reduction division during gametogenesis?
A
Oogonium
B
Primary oocyte
C
Primary spermatocyte
D
Secondary oocyte
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Secondary oocyte
Concept:

Reduction division refers specifically to Meiosis I, where homologous chromosomes are separated to cut the ploidy level in half (diploid to haploid).

Solution:

  • Oogonia and primary spermatocytes/oocytes are all diploid (\(2n\)) and are produced via mitosis or growth, not reduction.


  • A primary oocyte undergoes Meiosis I (the reduction division).


  • This division physically results in two haploid (\(n\)) cells: a tiny first polar body and a large secondary oocyte.


Why other options are incorrect:

Primary oocytes and spermatocytes are the substrates entering the reduction division, not the products. Oogonia are stem cells that have never entered meiosis.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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