The following cross involving three genes was performed Aa B

The following cross involving three genes was performed: Aa Bb Cc times aa bb cc, and the phenotypes and number of progeny are shown below. Each pair of alleles exhibits simple dominance and excessiveness. Which pair of genes is clearly linked to each other, and which gene is clearly unlinked to the other two? What is the map distance between the two linked genes?

Solution

B and C are linked to gene to each other. And A and B are linked to each other. This is because, the number of recombinants are less which occur when the genes are linked.

A and C are not linked, as the number of recombinants is more as the distance between the alleles is more.