Puppies born too large experience difficulties during birthing and tend to have respiratory and other problems. Puppies born too small often can't compete with their siblings for their mother's milk. Thus, puppies of intermediate size have a survival advantage. This is an example of ____ selection.
A) directional
B) stabilizing
C) disruptive
D) frequency
E) allelic

Question

​Puppies born too large experience difficulties during birthing and tend to have respiratory and other problems. Puppies born too small often can't compete with their siblings for their mother's milk. Thus, puppies of intermediate size have a survival advantage. This is an example of ____ selection.
A) ​directional
B) ​stabilizing
C) ​disruptive
D) ​frequency
E) ​allelic

Quizplus · Accepted Answer

This is an example of stabilizing selection, where individuals with intermediate traits (in this case, size) have a survival advantage over those with extreme traits (either too large or too small). Stabilizing selection tends to reduce variation in a population by favoring the average individuals.

​Puppies Born Too Large Experience Difficulties During Birthing and Tend

Puppies Born Too Large Experience Difficulties During Birthing and Tend