What are the differences between homozygous and heterozygous ?
Answer»
Homozygous
Heterozygous
1. It refers to having two identical alleles for a single trait.
1. It refers to having two different alleles for a single trait.
2. For example, for long pea plant homozygous combination is ‘TT’
2. For example, for long pea plant heterozygous combination is ‘Tt’
3. On self pollination homozygous plants produce homozygous plants only.
3. On self pollination heterozygous plants produce homozygous dominant, heterozygous dominant and homozygous recessive plants in 1: 2 :1 ratio respectively.