Question

If parental phenotype appears in a frequency of 1/16 (1:15), the character is controlled by________

• A. one gene
• B. two genes
• C. three genes
• D. four genes

Answer 1

Answer:

B. two genes

If parental phenotype appears in a frequency of 1/4 (1:3 ratio), the character is governed by a single gene. If parental phenotype appears in a frequency of 1/16 (1:15), the character is controlled by two genes. If it is 1/64 (1:63) - genes, in 1/256 (1:255) - by 4 genes