Mendel’s Laws

Mendel’s Laws

Based on his experiments of monohybrid and dihybrid cross, Mendel proposed three important laws which are now called as Mendel’s Laws of Heredity.

Law of Dominance:

“When two homozygous individuals with one or more sets of contrasting characters are crossed, the characters that appear in the F₁ hybrid are dominant and those that do not appear in F₁ are recessive characters".

Law of Segregation or Law of purity of gametes:

“When a pair of contrasting factors or genes or allelomorphs are brought together in a heterozygote or hybrid, the two members of the allelic pair remain together without mixing and when gametes are formed, the two separate out, so that only one enters each gamete.”

Law of independent assortment:

“In case of inheritance of two or more pairs of characters simultaneously, the factors or genes of one pair assort out independently of the other pair.”