Answer:
For the first experiment, the recombination frequency is shown below. This experiment comprises the cross between the Tall and the Antennae.
Tall-antennae - 46% - Expected
Dwarf-no antennae - 42% - Expected
Dwarf-antennae - 7% - Recombinant
Tall-no antennae - 5% - Recombinant
Total = 100%
For the recombinants, the recombination frequency is:
= 7 + 5 = 12%
Thus, the recombination frequency between the T and A genes is 12%.
For the second experiment, the cross takes place between the heterozygous antennae and the upturned snout. The results are shown below:
Antennae-upturned snout - 47% - Expected
No antennae-downward snout - 48 % - Expected
Antennae-downward snout - 2% - Recombinant
No antennae-upturned snout - 3% - Recombinant
Total = 100%
The recombinant frequency is = 2 + 3 = 5%
Thus, the recombination frequency between the A and S genes is 5%.
