Name: ______________________________________ Date: __________ Period: ______
Complete Dominance- Mendelian Genetics
Directions: Read each problem carefully. Choose a letter to represent the trait and list the genotypes for the
parental generation (P). Fill in the Punnett Square and show the genotypic ratio and the phenotypic ratio for
each cross.
Fill out the table below using your notes or the text.
Term
Definition
In your own words…
How will you remember?
Homozygous
Heterozygous
Phenotype
Genotype
Allele
Dominant
Recessive
1. In rabbits, black fur is dominant over white fur. Show the cross of a heterozygous black male with a
homozygous white female.
P (parent genotypes): _____ x _____
Genotypic ratio: ____:____:_____
Phenotypic ratio: ____:____
2. Tall is dominant over short in pea plants. Show the cross between a homozygous short plant and a
homozygous tall plant.
P:
Genotypic ratio:
Phenotypic ratio:
