For each description, give me genotype using the letters R or r
a. Homozygous Dominant
b. Heterozygous
c. Homozygous Recessive
a. RR
b. Rr
c. rr
To determine the genotype using the letters R or r, we need to understand the meaning of each term:
a. Homozygous Dominant: This means an individual has two copies of the dominant allele. The dominant allele is represented by the letter R. Therefore, the genotype would be RR (two capital Rs) since both alleles are dominant.
b. Heterozygous: This means an individual has one copy of the dominant allele and one copy of the recessive allele. The dominant allele is represented by the letter R, while the recessive allele is represented by the letter r. Therefore, the genotype would be Rr (one capital R and one lowercase r) since it is a combination of both alleles.
c. Homozygous Recessive: This means an individual has two copies of the recessive allele. The recessive allele is represented by the letter r. Therefore, the genotype would be rr (two lowercase rs) since both alleles are recessive.
a. Homozygous Dominant: RR
b. Heterozygous: Rr
c. Homozygous Recessive: rr