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Question
Differentiate between the following -
Homozygous and Heterozygous
Solution
| Homozygous | Heterozygous |
| It is pure for a trait and breeds true, producing homozygous individuals with similar characteristics. | A heterozygous individual is usually pure and generates offspring with diverse genotypes on selfing, such as TT, Tt, and tt on selfing of Tt individuals. |
| Both alleles of a trait, such as TT and tt, are similar. | It carries different alleles, such as Tt. |
| Homozygous individuals can carry either dominant or recessive alleles, but not both. | A heterozygous individual carries both dominant and recessive alleles. |
| It produces one type of gametes. | It creates two types of gametes. |
| It does not display excessive vigour. | Individuals can exhibit hybrid vigour, often known as heterosis. |
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