The genotypic and phenotypic ratio in the off | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) In Mendelian genetics, complete dominance typically results in a phenotypic ratio of $3:1$ and a genotypic ratio of $1:2:1$ in the $F_2$ generatio

Vedclass · Accepted Answer

Incomplete dominance

Vedclass · Answer

(B) In Mendelian genetics, complete dominance typically results in a phenotypic ratio of $3:1$ and a genotypic ratio of $1:2:1$ in the $F_2$ generation.However, in cases of Incomplete dominance, the dominant allele does not completely mask the recessive allele.As a result, the heterozygote shows an intermediate phenotype.For example, in $Mirabilis$ 	ext{ jalapa} (Four o'clock plant), a cross between red and white flowers produces pink flowers in the $F_1$ generation.When $F_1$ plants are self-pollinated, the $F_2$ generation shows a phenotypic ratio of $1$ (Red) $: 2$ (Pink) $: 1$ (White) and a genotypic ratio of $1 (RR) : 2 (Rr) : 1 (rr)$.Thus, both the genotypic and phenotypic ratios are identical $(1:2:1)$.

The genotypic and phenotypic ratio in the offspring is $1:2:1$. This explains the principle of:

Similar Questions

When the progeny obtained in the $F_1$ generation shows the expression of both genes present in its genotype, but the expression is not complete, which of the following characteristics can be applied?

In the inheritance of flower color in the dog flower (Snapdragon),the $F_1$ phenotype is:

In which cross will you get the most pink flowers?

In a Mendelian monohybrid cross,the $F_2$ generation shows identical genotypic and phenotypic ratios. What does it tell us about the nature of alleles involved? Justify your answer.

What would be the colour of flowers in $F_1$ progeny as a result of a cross between homozygous red and homozygous white-flowered Snapdragon?

Vedclass Test Series

Exam Paper Generator

Online Exam Module