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An individual with two different versions of a gene is genetically _____________. In traits with a...

An individual with two different versions of a gene is genetically _____________. In traits with a simple pattern of inheritance, only the trait conferred by the ____________ form of the gene will be visible. The other form of the gene is ____________ : it confers a trait that is only visible when the individual is genetically ____________ , or has two identical copies of the gene.

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An individual with two different versions of a gene is genetically Heterozygous. In traits with a simple pattern of inheritance, only the trait conferred by the dominant form of the gene will be visible. The other form of the gene is recessive form : it confers a trait that is only visible when the individual is genetically homozygous, or has two identical copies of the gene.

Ex. AA or aa -----------homozygous; Aa-----heterozygous

As "A" allele of gene is dominant form, the trait will be exhibited both in homozygous (AA) and heterozygous (Aa) form. The recessive allele "a" will be exhibited only in homozygous form (aa).

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