Question

in monohybrid cross what is the ratio of homozygous dominant and homozygous recessive individuals in F2 generation​

Answer 1

3:1 is the ratio in mono hybrid cross

Answer 2

3:1

With true-breeding parents (one homozygous dominant, one homozygous recessive), all of the F1 progeny will be heterozygous and show the dominant phenotype, and then these will give rise to a 3:1 ratio of phenotypes in the F2 generation.