The phenotypic ratio obtained in quantitative | vedclass

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

Question

(B) In quantitative inheritance (polygenic inheritance),the phenotypic ratio follows the binomial expansion $(a + b)^n$,where $n$ is the number of gen

Vedclass · Accepted Answer

$1 : 4 : 6 : 4 : 1$

Vedclass · Answer

(B) In quantitative inheritance (polygenic inheritance),the phenotypic ratio follows the binomial expansion $(a + b)^n$,where $n$ is the number of gene pairs involved.For a dihybrid cross involving $2$ pairs of genes,the ratio is $(1 + 1)^4$ or specifically derived from the expansion of $(1 + 1)^2$ squared,resulting in $1 : 4 : 6 : 4 : 1$.If $3$ pairs of genes are involved,the ratio becomes $1 : 6 : 15 : 20 : 15 : 6 : 1$.

The phenotypic ratio obtained in quantitative inheritance of a dihybrid cross is

Similar Questions

Polygenic traits exhibit $....$.

Which characteristic is responsible for human skin color?

Which scientist demonstrated that skin color in humans exhibits polygenic inheritance?

$A$ characteristic showing continuous variation is controlled by a

Grain colour in wheat is determined by three pairs of polygenes. Following the cross $AABBCC$ (dark colour) $\times$ $aabbcc$ (light colour),in $F_2$ generation,what proportion of the progeny is likely to resemble either parent?

Vedclass Test Series

Exam Paper Generator

Online Exam Module