Figure 17.9

-The graph above shows the survival of sociable weavers as a function of body mass.Sociable weaver body mass seems to be an example of ____.
A) directional selection
B) stabilizing selection
C) sexual selection
D) disruptive selection
E) artificial selection

Question

Figure 17.9
 
-The graph above shows the survival of sociable weavers as a function of body mass.Sociable weaver body mass seems to be an example of ____.  
A) directional selection 
B) stabilizing selection 
C) sexual selection 
D) disruptive selection 
E) artificial selection

Quizplus · Accepted Answer

The graph shows that sociable weavers with intermediate body sizes have the highest survival rates, while those with very small or very large body sizes have lower survival rates. This distribution is characteristic of stabilizing selection, where individuals with intermediate phenotypes have better fitness than those with extreme phenotypes.

Figure 17.9 -The Graph Above Shows the Survival of Sociable Weavers as of Sociable