Distinguish between: Homozygous and Heterozygous.

Homozygous and Hererozygous.
HomozygousHeterozygous 
1.
Organisms having 
identical alleles for a
character are homozygous. 
Organisms having
dissimilar alleles for a
character are heterozygous.
2. It is pure or true breeding It is hybrid 
3. They form only one type of gamete They form more than one type of gametes. 
4. e.g. Tall (TT), Dwarf (tt). e.g. Tt. 

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