question_answer

Pure breeding pea plants with green pods are crossed with pure breeding pea plants with yellow pods. All the \[{{F}_{1}}\] generation plants have green pods. Plants from the \[{{F}_{1}}\] generation are allowed to be interbred. What colour of pods will be observed in \[{{F}_{2}}\] generation plants?

A) All green

B) All yellow

C) 1 green : 1 yellow

D) 3 green : 1 yellow

Correct Answer: D

Solution :

In case of pea plants, the gene for green coloured pod (G) is dominant over the gene for yellow coloured pod (g). A cross between pure breeding pea plants with green pods (GG) and pure breeding pea plants with yellow pods (gg) is shown as:

Therefore, plants with green and yellow coloured pods will be obtained in the ratio of 3:1 respectively.