NEET2025Botany-Mendelian Genetics
NEET 2025 Botany Dihybrid Cross MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Genes R and Y follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the phenotypic ratio of the F₂ generation?
A
Phenotypic ratio - 1 : 2 : 1
B
Phenotypic ratio - 3 : 1
C
Phenotypic ratio - 9 : 3 : 3 : 1
D
Phenotypic ratio - 9 : 7
Correct Answer
Option C
Detailed Explanation
In a dihybrid cross following Mendel's laws, the phenotypic ratio of the F₂ generation is 9:3:3:1 for two traits showing independent assortment.
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