Explain monohybrid experiment with an example. Which law of inheritance can we undrestand? Explain.

Explanation

1. Cross pollinating a pure breed of tall (TT) and dwarf (tt) plants gave F1 generation in which all the plants are heterzygous tall
2. These plants on self pollination gave F2 generation in which 75% of planta are tall and 25% of plants are dwarf. 3. Out of 75% tall plants 25% of plants are homozygous tall (TT) and remaining 50% are heterozygous tall (Tt, tT).
4. The remaining 25% dwarf plants are homozygous dwarf (tt)
5. So the phenotype ratio in F2 generation is 3:1 whereas genotype ratio is 1:2:1
6. with this experiment we can undrstand two laws of inheritance. One is law of dominance and the second one is law of segregation
7. As only one trait is expressed in the offsprings of first generation crosses, we can assume that, among a pair of alleles for a character oly one expresses itself in the first generation one of the allele ins dominant over the other This is what Mendel called Law of dominance.
8. The law of segregation states that every individual possesses a pair of alleles for any particular trait and that each parent passes a randomly selected copy (allele) of only one of these to its offspring.