Question

in a monohybrid cross,the phenotypic and genotypic ratio is 1:2:1. what type of inheritance is it? give examples?

Answer 1

Answer:

It shows linkage so ratio of phenotype and genotype remains same

Answer 2

The inheritance will be monohybrid inheritance. Monohybrid inheritance occurs when two individuals with homozygous genotypes are crossed with each other to produce the offspring. The genotypic ratio in such cross or inheritance will be 1:2:1 but the phenotypic ratio will be 3:1.

An example of monohybrid inheritance or cross will be a cross between two hybrid tall pea plants (Tt).

On crossing these two pea plants we will get a phenotype of 3 tall pea plants and 1 dwarf pea plant but the genotype that we will get will be:

1 pure tall pea plant (TT)

2 hybrid tall pea plants (Tt)

1 pure dwarf pea plant (tt)