The numbers of fledged young from female robins of different sizes were assayed and are presented in the table. Assume that body size is at least partially heritable.Assuming that all other aspects (survival, etc.) are independent of size, this population is most likely experiencing _______ selection, and the variation in the population should _______ over many generations.
A) directional; increase
B) directional; decrease
C) stabilizing; increase
D) stabilizing; decrease
E) disruptive; increase

Question

The numbers of fledged young from female robins of different sizes were assayed and are presented in the table.  Assume that body size is at least partially heritable.Assuming that all other aspects (survival, etc.) are independent of size, this population is most likely experiencing _______ selection, and the variation in the population should _______ over many generations.
A) directional; increase 
B) directional; decrease 
C) stabilizing; increase 
D) stabilizing; decrease 
E) disruptive; increase

Quizplus · Accepted Answer

The Answer of The numbers of fledged young from female robins of different sizes were assayed and are presented in the table.  Assume that body size is at least partially heritable.Assuming that all other aspects (survival, etc.) are independent of size, this population is most likely experiencing _______ selection, and the variation in the population should _______ over many generations.
A) directional; increase 
B) directional; decrease 
C) stabilizing; increase 
D) stabilizing; decrease 
E) disruptive; increase

The Numbers of Fledged Young from Female Robins of Different