When two pea plants, one with yellow and round seeds and the other with green and wrinkled seeds are crossed, the plants of the F2 generation will be obtained in the ratio of
a) 1 : 1
b) 3 : 1
c) 9 : 3 : 3 : 1
d) 1 : 1 : 1 : 1
a) 1 : 1
b) 3 : 1
c) 9 : 3 : 3 : 1
d) 1 : 1 : 1 : 1
Answers & Comments
Answer:
The correct answer is c) 9 : 3 : 3 : 1.
Explanation:
In the first filial (F1) generation, the two pea plants produce offspring with both yellow and round seeds, and green and wrinkled seeds, which are referred to as a hybrid.
In the second filial (F2) generation, the hybrid plants produce offspring with different combinations of the traits from their parents, resulting in a segregation of the traits.
According to the laws of Mendelian genetics, the F2 generation will have a ratio of 9 plants with yellow and round seeds, 3 plants with green and round seeds, 3 plants with yellow and wrinkled seeds, and 1 plant with green and wrinkled seeds, which is the ratio of 9 : 3 : 3 : 1.