Question

Black-bellied seedcrackers have either small beaks (better for eating soft seeds) or large beaks (better for hard seeds). There are no seeds of intermediate hardness; therefore, which kind of selection acts on beak size in seedcrackers?
A. Stabilizing selection
B. Directional selection
C. Disruptive selection

Answer 1

Disruptive Selection.

Explanation:

• Disruptive selection is also known as Diversifying selection.

• Disruptive selection helps in determining the changes which is seen in population genetics,

• The disruptive selection favours those individuals which have the smallest and largest values of the trait or characteristics.
• These individuals possess the highest fitness.
• The individuals which have an intermediate values have lower fitness.
• The example of Disruptive selection is seen in Male lazuli buntings Feather colour which is also kown as Passerina amoena.
• Passerina amoena is a bird species which is native to North America.