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recessive allele

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Noun1.recessive allele - an allele that produces its characteristic phenotype only when its paired allele is identical
allele, allelomorph - (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character; "some alleles are dominant over others"


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A previously described bluish-purple (B-type) shell color was found in one of the putative oo x oG crosses, suggesting that the B-type may be a recessive allele belonging to the same locus.
Here's how: (1) For each parent's genetic makeup, assign an uppercase letter for a dominant allele and a matching lowercase letter for a recessive allele (trait that's only expressed if an offspring has two copies of that gene).
Most forms of albinism are the result of the biological inheritance of genetically recessive alleles (genes) passed from both parents of an individual, though some rare forms are inherited from only one parent.
 
 
 
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