On the basis of which of the following ratio we can prove law of independence assortment?
Correct answer: A. 9:3:3:1
- A. 9:3:3:1
- B. 9:3:4
- C. 1:2:1
- D. 2:11
Explanation
The correct ratio for demonstrating the law of independent assortment is 9:3:3:1. This ratio results from a dihybrid cross where two heterozygous parents are crossed, and each trait is inherited independently according to Mendel's second law. This ratio is obtained by considering the combination of two pairs of alleles, each pair segregating independently during gamete formation. The other ratios provided do not demonstrate independent assortment: 9:3:4 is related to epistasis, 1:2:1 is typical of incomplete dominance in a monohybrid cross, and 2:11 does not represent a standard genetic ratio.
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About Mendel's Laws of Inheritance
Mendelian inheritance explains how alleles separate into gametes and assort during reproduction, producing predictable genotype and phenotype ratios. Questions cover dominance, recessiveness, homozygous and heterozygous conditions, the laws of segregation and independent assortment, monohybrid and dihybrid crosses, test crosses and the limits caused by linked genes.
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