In Drosophila, a female fly is heterozygous for three mutations, Bar eyes (B), miniature wings (m), and ebony body (e). Note that Bar is a dominant mutation. The fly is crossed to a male with normal eyes, miniature wings, and ebony body. The results of the cross are as follows.
111 miniature | 101 Bar, ebony |
29 wild type | 31 Bar, miniature, ebony |
117 Bar | 35 ebony |
26 Bar, miniature | 115 miniature, ebony |
Interpret the results of this cross. If you conclude that linkage is involved between any of the genes, determine the map distance(s) between them.
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