Figure 13.15

-A graph of phenotypic variation similar to the accompanying illustration strongly suggests
A) incomplete dominance.
B) codominance.
C) epistasis.
D) polygenic inheritance.
E) environmental effects on phenotype.

Question

Figure 13.15
 
-A graph of phenotypic variation similar to the accompanying illustration strongly suggests  
A) incomplete dominance. 
B) codominance. 
C) epistasis. 
D) polygenic inheritance. 
E) environmental effects on phenotype.

Quizplus · Accepted Answer

Polygenic inheritance involves the contribution of multiple genes to the expression of a single phenotype, which results in a wide range of variation. The graph in Figure 13.15 shows a bell-shaped curve, indicating that the phenotype is influenced by multiple genes.

Figure 13.15 -A Graph of Phenotypic Variation Similar to the Accompanying Illustration