Individuals have the following genotypes: AA, aa, Bb, CC, Dd, Ee. Which of the bottom are homozygotes?

univerkov | September 17, 2021 | education

Individuals have the following genotypes: AA, aa, Bb, CC, Dd, Ee. Which of the bottom are homozygotes? And which are heterozygotes?

An individual in whose genotype the allelic pair of genes consists of two traits of the same form is homozygous. That is, each allele contains only dominant or only suppressed genes. Accordingly, individuals are homozygous for the dominant trait (AA, CC), and recessive (aa).
An individual in whose genotype an allelic pair of genes consists of traits of different forms is heterozygous. In this case, one allele carries a gene with an suppressive trait, and the other – with a suppressed trait. Examples: BB, Dd, Ee.

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