Monohybrid Cross Problem Set

Problem 2: Mendel's First Law

A phenotypic ratio of 3:1 in the offspring of a mating of two organisms heterozygous for a single trait is expected when:

A. the alleles segregate during meiosis.

B. each allele contains two mutations.

C. the alleles are identical.

D. the alleles are incompletely dominant.

E. only recessive traits are scored.