Question

What are the genotype and phenotype of a plant that has the genotype `"RR"` for leaf color and `"Tt"` for height? Red leaf color is dominant and tall height is dominant.

Answer 1

The plant has red leaves and tall stems.

Explanation:

Genotype: `"RRTt"`

For this plant, the genotype for leaf color is `"RR"`, which is homozygous dominant, consisting of two dominant alleles. Since the only allele possible is dominant, the plant will express the dominant phenotype, which is red leaf color.

The genotype for height of the stems is `"Tt"`, which is heterozygous, containing a dominant and recessive allele. Since the allele for tall height is dominant, the tall stems phenotype will be expressed.