1. Humans inherit two alleles for every gene. For an example, gene "R" provides the
instructions for face shape. The dominant allele for the gene is denoted as R and the
recessive allele for the gene is denoted as r. The dominant phenotype is a round face shape
and the recessive phenotype is a square face shape. Use this information to answer the
questions below:
What is the genotype of a homozygous dominant individual?
What is the phenotype of a homozygous dominant individual?
What is the genotype of a heterozygous individual?
What is the phenotype of a heterozygous individual?
What is the genotype of a homozygous recessive individual?
What is the phenotype of a homozygous recessive individual?
Complete the Punnett square for the following parental cross: Rr x rr
What percentage of the F₁ offspring have the genotype Rr?
What percentage of the F₁ offspring have the genotype rr?
What percentage of the F₁ offspring have the genotype RR?
What percentage of the F₁ offspring have a round face shape?
What percentage of the F₁ offspring have a square face shape?