The main differences between Homozygous and Heterozygous individuals are as under.
|HOMOZYGOUS INDIVIDUALS||HETEROZYGOUS INDIVIDUALS.|
|1. It is pure for a trait and breeds true.i.e. gives rise to similar homozygous individuals.||Heterozygous individuals is seldom pure and produces offspring with different genotypes on selfing.e.g. TT, Tt, and tt on selfing of Tt individuals.|
|2. Both the alleles of a trait are similar. e.g. TT, tt.||It carries dissimilar alleles, e.g., Tt.|
|3. Homozygous individuals can carry either dominant or recessive alleles but not both.||Heterozygous individuals has both dominant and recessive alleles.|
|4. It produces one type of gametes.||It produces two types of gametes.|
|5. It does not show extra vigor.||The individual can show extra vigor called hybrid vigdor or heterosis.|