Which of the Following Statements is TRUE

Question

Which of the following statements is TRUE?
A) The genotype is the physical appearance of a trait.
B) Alleles, genes, and loci are different names for the same thing.
C) The phenotype of a dominant allele is never seen in the F1progeny of a monohybrid cross.
D) A testcross can be used to determine whether an individual is homozygous or heterozygous for a dominant allele.

Accepted Answer

A testcross involves crossing an individual with a dominant phenotype with a homozygous recessive individual to determine if the dominant phenotype is due to a homozygous or heterozygous genotype.