Question

In lathyrus odoratus homozygous blue flowered long polen plant was crossed with red flowered round pollen plant the F1 plant is test crossed and give rise to 720 seeds. On sowing of these seeds how many of their offsorings plant wil be blue flowered with round pollen?

Answer 1

Answer:

In Lathyrus odoratus, the blue flower (B) is dominant red flower (b) and long pollen (L) is dominant over round pollen. A cross is made between blue flowered and long pollen (BbLl) plant and red flower and round pollen plant (bbll). In this case, the alleles do not assort independently. Hence, it shows greater frequency of 87.4% of parent types, that is Round-blue and long-red and less frequency of 12.6% of recombinant types, that is Long-blue and Round-red.

Thus, the correct answer is '87.4%.'