Question

what is homozygous and heterozygous

Answer 1

hii there!!

If an organism has two copies of the same allele, for example AA or aa, it is homozygous for that trait. If the organism has one copy of two different alleles, for example Aa, it is heterozygous.

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Answer 2

So,

If the organism has a copy of two different alleles, for eg Xx, it is heterozygous.

And

If an organism has 2 copies of the same alleles, for eg SS or say ee, it is homozygous for that trait.

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