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  Section: Genetics » Multiple Alleles (Based on Classical Concept of Allelomorphism)
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Eye colour in Drosophila

Multiple Alleles (Based on Classical Concept of Allelomorphism)
Multiple alleles and isoalleles 
Colour loci in corn
Skin colour in rodents
Eye colour in Drosophila
Self sterility in Nicotiana
ABO blood groups in humans

Normal eye colour in Drosophila is red. White eyed Drosophila was one of the first mutations known in Drosophila. Red eye and white eye showed simple dominant recessive relationship.

Subsequently, different shades between red and white were recovered. About a dozen different allelomorphs, some of them shown in Table 5.5, are known now at this locus. Red eye was dominant over all others. When any two recessive alleles were brought together, intermediate type was obtained. That these different members of the series may not be allelic in a strict sense but are pseudoallelic, would be discussed in Fine Structure of Gene-at the Genetic Level (A New Concept of Allelomorphism).

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