Biology Evolution NUMS 2024
PMDC Verified Question 4 of 47
Children of a mason do not inherit strong muscles developed by father due to hard labour. This is an example of:
A
Survival of the fittest
B
Over production of offspring
C
Not inheriting acquired characters
D
Use and disuse of organs
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Not inheriting acquired characters
Concept:

Modern genetics draws a strict line between somatic (body) cells and germ-line (reproductive) cells.

Solution:

  • A mason develops strong muscles due to intense physical labor (an acquired, somatic trait).
  • Because this environmental stress does not alter the DNA sequence in the mason's sperm cells, the muscular phenotype cannot be passed to his offspring.
  • This scenario is a direct textbook refutation of Lamarckism, perfectly demonstrating the principle of not inheriting acquired characters.


Why other options are incorrect:

  • This situation highlights the failure of the "Use and disuse" theory to explain inheritance, making option C the exact descriptive conclusion of the phenomenon.

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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