Read each of the sentences and associate it with the correct number of genes affecting phenotypes. Place each sentence into the correct box. (HINT: One sentence should be sorted into both boxes.)
Depending on the number of alleles involved, two to three distinct phenotypes are generally
observed.
A graph of the frequencies of phenotypes often shows a normal distribution.
Genes may be on the same chromosome or different chromosomes.
All alleles are of the same gene.
Each gene may have two or more alleles.
Single-Gene traits
Polygenic traits