(a) Does the evidence indicate that the a and b loci are linked?

(b) What is the map distance between a and b?

(c) Are the alleles in the parent with genotype a+a b+b in coupling configuration or repulsion? How do you know?

In tomatoes, dwarf (d) is recessive to tall (D) and opaque (light green) leaves (op) are recessive to green leaves (Op). The loci that determine the height and leaf color are linked and separated by a distance of 7 m.u. For each of the following crosses, determine the phenotypes and proportions of progeny produced.

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