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    gcse biology higher tier: what is the funtion of alleles in the body.
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    (Original post by jamiedodger)
    gcse biology higher tier: what is the funtion of alleles in the body.

    alleles are different versions of a gene. So for eye colour you inherit one allele from your mum and one allele from your dad. The dominant allele (i.e. brown) will over power a recessive allele (i.e. blue). So if you have blue eyes you have 2 recessive alleles (that's put very simply)
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    Yup, as Scotty Bear said: alleles are different versions of a particular gene.

    Each gene codes for the production of a particular protein. Different alleles of that gene will produce different versions of that protein (or a different protein with a similar yet different function).

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    Each allele or allelomorph is a counterpart of the gene (it's allele frequency and not gene frequency, ) it shares a locus with. There may be multiple alleles to a single gene. An allele/gene pair controls the net expression of any particular trait. An allele may be dominant or co-dominant or even over-dominant w.r.t the other counterpart.
 
 
 
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