If Genes Are Linked and an F₁ Is Testcrossed

Multiple Choice

If genes are linked and an F₁ is testcrossed,

A) the genes cannot separate.
B) they can produce only one phenotype.
C) they only produce homozygotes.
D) they produce more recombinant phenotypes than parental phenotypes.
E) they produce more parental phenotypes than recombinant phenotypes.