Tomato plants usually have flowers in small groups and produce fruits that are round and smooth. Three mutations were found: peach (hairy fruits), oblate (flattened fruits), and clustered (with many flowers in a group).

1. Identify, with reasons, which tomato plants are recombinants in the F2 generations in:

a) cross 1 %u2013 smooth oblate and peach round
b) cross 2 %u2013 smooth clustered and peach few
2. Draw diagrams to show how recombinants were produced by crossing over in:

a) cross 1 – diagram involves crossing over genes to create recombinants smooth oblate, and peach round
b) cross 2 – diagram involves crossing over genes to create recombinants smooth clustered and peach few.
3. Calculate the percentage of recombinants in:

a) cross 1 %u2013 total: 1000; total of recombinants: 467; 46.7%
b) cross 2 %u2013 total: 1000; total of recombinants: 342; 34.2%
4. Discuss the reasons for the difference in recombination percentage between the two crosses.