Is eye colour gene in drosophila an example of multiple alleles?
Answers
yes, it is an example of multiple alleles...
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example of multiple alleles is the eye colour in Drosophila. The normal colour of the eye is red. ... A cross between the two mutant forms, produces intermediate type in the F1 except white and apricot races which are not alleles but closely linked genes.
Sometimes, a dominant gene occurs in two or more forms. These multiple dominant alleles will produce the same phenotypic effect in homozygous condition but their effect will show a small difference in heterozygous state.
.In Drosophila, thus, the gene for red eye colour is dominant over white. The red gene will produce dark red colour in the homozygous condition but in combination with the white allele the gene for red colour produces a dark red colour in flies from Soviet Russia but the same combination in the flies coming from the U.S.A. produces a light red colour. It does mean that dominant gene for red colour occurs in two forms. These are said as isoalleles.