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4.Principles of Inheritance and Variation
medium
In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in $F_1$ generation?
A
$9 : 1$
B
$1 : 3$
C
$3 : 1$
D
$50 : 50$
(AIPMT-2007)
Solution
(d) : Yellow $(Y)$ seeds are dominant to green $(y)$. So a heterozygous yellow seeded plant will have the genotype of $(Yy)$ and a green seeded plant will have genotype of $(yy)$. When these two plants are crossed, the $F_1$ generation will have the ratio of yellow : greenas $50 : 50$. It is shown as $50: 50$
Standard 12
Biology
