Activity 8.3 Inheritance, Genes, and Chromosomes

Map Unit

1% recombinants or 1.0 cM

Incomplete Dominance

Eggplant fruit color

Hybrids

F1 heterozygotes

Epistasis

Labrador retriever color

Dihybrid

RrYy

Inheritance Pattern

Pedigree

Trait

White flowers

Sex-linked trait

Red-green color blindness

Multiple Alleles

Rabbit coat color

Locus

Gene location

T.H. Morgan

Drosophila melanogaster

Hemizygous

Single allele

Linkage

Do not assort independently

F2

Second filial generation

Test Cross

Mating with homozygous recessive