Question

The law of segregation of characters is also called the law of purity of gametes because

• A. Gametes have only one of the two alleles for each character
• B. Gametes cannot be contaminated
• C. Gametes are very different type of cells
• D. It was just another name adopted accidentally

Answer 1

The correct option is A Gametes have only one of the two alleles for each character

Mendel in his monohybrid cross experiment, self crossed the F₁ hybrids(Tt), F₂ generation is raised. In the F₂ generation 3 tall plants and 1 dwarf plant phenotypically or 1(TT) 2(Tt) 1(tt) genotypically are formed. He stated that, each factor in a pair separate during gamete formation, so that each gamete receives only one factor for each character. It is called Law of Segregation or purity of gametes. It occurs during process of Meiosis.

So, the correct option is ‘Gametes have only one of the two alleles for each character.