184469
Some individuals with blood group A may inherit the genes for blond hair, while other individuals with blood group A may inherit the gene for brown hair. This can be best explained by the principle of
1 dominance
2 multiple alleles
3 indepemdent assortment
4 incomplete dominance
Explanation:
Individual with blood group A may inherit the gene for blond hair, while other individuals with blood group A may inherit the gene for brown hair. This can be best explained by the principle of independent assortment. According to Mendel's law of independent assortment, when two pairs of independent alleles are brought together in the hybrid \(F_{1}\), they show independent dominant effects. In the formation of gametes, the law of segregation operates, but the factors assort themselves independently at random and freely.
AFMC -2009
Principle of Inheritance and Variation
184472
A dihybrid ratio of \(1: 4: 6: 4: 1\) is obtained instead of \(9: 3: 3: 1\). This is an example of:
1 supplementary genes
2 complementary genes
3 polygenic inheritance
4 pleiotropic genes
Explanation:
A dihybrid ratio of \(1: 4: 6: 4: 1\) is obtained instead of 9:3:3:1, this is an example of polygenic inheritance. The effect adds up with increase in the number of genes and thus it is said to be cumulative such gene are described as multiple factors and the traits influenced by them as polygenic.
184469
Some individuals with blood group A may inherit the genes for blond hair, while other individuals with blood group A may inherit the gene for brown hair. This can be best explained by the principle of
1 dominance
2 multiple alleles
3 indepemdent assortment
4 incomplete dominance
Explanation:
Individual with blood group A may inherit the gene for blond hair, while other individuals with blood group A may inherit the gene for brown hair. This can be best explained by the principle of independent assortment. According to Mendel's law of independent assortment, when two pairs of independent alleles are brought together in the hybrid \(F_{1}\), they show independent dominant effects. In the formation of gametes, the law of segregation operates, but the factors assort themselves independently at random and freely.
AFMC -2009
Principle of Inheritance and Variation
184472
A dihybrid ratio of \(1: 4: 6: 4: 1\) is obtained instead of \(9: 3: 3: 1\). This is an example of:
1 supplementary genes
2 complementary genes
3 polygenic inheritance
4 pleiotropic genes
Explanation:
A dihybrid ratio of \(1: 4: 6: 4: 1\) is obtained instead of 9:3:3:1, this is an example of polygenic inheritance. The effect adds up with increase in the number of genes and thus it is said to be cumulative such gene are described as multiple factors and the traits influenced by them as polygenic.
