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'Genotype determinants' are just another set of words to describe alleles, because an allele is what determines your genes.

An allele is basically an alternative forms of a gene. Humans have 2 forms (2 alleles) for each gene (except in sex cells) one from your mom, one from your dad.

The allele occupies a fixed position (locus) on the chromosome and, depending on whether or not it is dominant or recessive, it determines the phenotypes- or how the gene will be physically expressed.

A Example of recessive alleles:

widows peak- you need two 'widows peak' alleles to have that feature physically expressed.

If you have 1 widows peak allele and another for 'no widows peak' then the dominant form will be expressed, in this case it means you will not have a widows peak.

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14y ago

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