In a monohybrid cross of corn plants, purple seeds (p) are dominant to yellow (y). both parents in the original cross are homozygous. one has purple seeds, and one has yellow seeds.The genotype of the purple plant would be PP.
An organism's genotype generally refers to the genetic makeup of the organism. Each gene is represented by two alleles, also known as alternative forms of the gene.
When the same alleles represent a gene, such gene is said to be homzygous, but when the alleles are different, such genes are said to be heterozygous.
In this case, the purple seed allele is represented by P and the purple parent is said to be homzygous. Hence, the genotype would definitely be PP.
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