Question
In a species, the weight of a newborn ranges from 2 to 5 kg. 97% of the newborns with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 kg to 5 kg die. Which type of selection process is taking place?
Cyclical selection
Directional selection
Stabilizing selection
Disruptive selection
natural selection can operate in three ways: stabilisation, directional change, or disruption. Stabilising selection is the process where more individuals acquire the mean character value and the extremes are eliminated . In this scenario, infants with the average weight (mean value) have the highest survival rate, while those with extreme weights (very low or very high) die. This eliminates the peripheral values and stabilizes the population around the mean.
This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Evolution. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
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