How many laws were given by mendel base on monohybrid cross ?

Explanation

This law gives the explanation for expression of only one of the narental trait in `F_1` hybrid.
= This law states that out of pair of contrasting characters only one is able to express itself phenotypically in F hybrid called as dominant while the alternate form remains hidden and called recessive.
= In a cross between true breeding tall pea plant and a true breeding dwarf pea plant all the plants of `F_1` generation were tall.
= When the `F_1` individuals were self pollinated it was observed that the tall and dwarf plants in `F_2` generation were in the ratio of 3 : 1.
= the following example can explain the inheritance pattern .

= In this case the `F_1` generation show that tallness is dominant over dwarfness and recessive character (dwarfness) remain hidden in `F_1` generation but appears again in `F_2` generation.
= The tallness and dwarfness, two forms of trait of height of stem appears in the ratio of 3 : 1 which is known as Mendel.s monohybrid phenotypic ratio.