A Drosophila geneticist crossed females homozygous for three X-linked mutations (y, yellow body; B, bar eye shape; v, vermilion eye color) to wild-type males. The F₁females, which had gray bodies and bar eyes with dark red pigment, were then crossed to y B⁺v males, yielding the following results:

Determine the order of these three loci on the X chromosome and estimate the distances between them.

Transcribed Image Text:

Phenotype Number Yellow, bar, vermilion] wild-type 546 Yellow 244 bar, vermilion Yellow, vermilion] bar 160 Yellow, barl vermilion 50