Asked by verenesha housen on Jun 12, 2024
Verified
In a certain bird species, clutch size (the number of eggs laid by a female in one breeding season) ranges from four to eight, and the most frequent clutch size is six. This phenomenon is an example of ____ selection.
A) sexual
B) stabilizing
C) disruptive
D) directional
E) artificial
Stabilizing Selection
A type of natural selection that favors intermediate variants by acting against extreme phenotypes, leading to a decrease in a population's genetic variance.
Clutch Size
The number of eggs laid or offspring produced by an animal, particularly birds, at one time or during one breeding session.
- Acquire knowledge about the different categories of natural selection, namely stabilizing, directional, and disruptive.
Verified Answer
IV
India VereenJun 18, 2024
Final Answer :
B
Explanation :
Stabilizing selection is when the selection pressure favors the average trait and reduces the extremes. In this case, clutch sizes of four to eight are possible, but the most frequent clutch size is six, indicating that there is selection against clutch sizes that are too small or too large. This creates a stabilizing effect on clutch size, where clutch sizes closer to the average have a higher likelihood of survival and successful reproduction.
Learning Objectives
- Acquire knowledge about the different categories of natural selection, namely stabilizing, directional, and disruptive.
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