Homo, Hetero....

[Kkae]

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Ok... i get confused with these sometimes.
What are the differences between homozygous, heterozygous and hemizygous?

Thanks much.

 

[DDSguyLA]

Hemizygous= Having only a single copy of a gene instead of the customary two copies. All of the gene on the single X chromosome in the male are in the hemizygous state.

Homozygous= if both copies have the mutation

Hetero= if only one has the mutuation and the other one is clean