Which of the following is not true for the Law of Dominance given by Mendel?

1.	Characters are controlled by discrete units called factors.
2.	Factors occur in pairs.
3.	In a dissimilar pair of factors, one member of the pair dominates the other.
4.	The alleles show blending at the time of fertilization.

An individual affected by Klinefelter’s syndrome:

An individual affected with Turner’s Syndrome:

Of the above statements, the correct statements are:

In the case of co-dominance, the F₁ generation resembles:

Genes that code for a pair of contrasting traits or slightly different forms of the same gene are known as:

What is the mode of inheritance of phenylketonuria?

Which of the following is not a feature of Down’s Syndrome?

What is F₂ phenotypic ratio in a dihybrid cross?

In true breeding, the allelic pair of genes are:

The expression of only one of the parental characters in a monohybrid cross in the F₁, the expression of both in the F₂ and the proportion of 3:1 obtained at the F₂ can be explained by:
1. Law of Dominance
2. Law of segregation
3. Law of Independent Assortment
4. Two-factor interaction