Star-Recessive, A Spontaneous Mutation in Drosophila Melanogaster
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In a genetics experiment conducted in November 1937 with Drosophila melanogaster and involving the dominant mutant Star (S, in chromosome 2- at locus 1.3; causing an irregularity in the arrangement of eye facets and facet hairs, the homozygote being lethal), a number of flies appeared with small narrow eyes. When these were mated inter se, all of the F1 had abnormal eyes, but these varied in size from that of S/+ (see Table IV) to a narrow slit of red pigment on which only a few facets were scattered. A clue to the manner of inheritance of the type with narrow eyes was found by mating a narrow-eye male to a wild-type female, with the result shown in Table I:
F2 Distribution (P1: wild-type ♀ x narrow-eye ♂)
February 14, 1938
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© Springer Science+Business Media New York 2004