Explain the Law of Dominance using a monohybrid cross.

Explanation

Mendel observed that in. `F_1` hybrids the character of tallness dominated or supress the dwarf character. The character which is expressed in `F_1` generation is called dominant trait and that which remained unexpressed is called recessive trait.
Based on his observation orrmonohybrid crosses, Mendel pro posed Law of Dominance. Law of Dominance:
Law of Dominance :
Characters are controlled by discrete units called factors.
2) Factors occur in pairs.
3) In a dissimilar pair of factors pertaining to a character one member of the pair dominates (dominant) the other (recessive).
The law of dominance is used to explain the expression of only one of the parental characters in a monohybrid cross in the `F_1` and the expression of both in the `F_2` It also explains the proportion of 3:1 obtained at the `F_2`

The phenotypic ratio is 3 Tall : 1 Dwarf.
The genotypic ratio is 1 TT, 2Tt, 1 tt.