In Lathyrus odoratus,dominant genes C and P a | vedclass

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(A) In $Lathyrus$ $odoratus$,the purple color is produced only when both dominant genes $C$ and $P$ are present $(C-P-)$.If either $C$ or $P$ is absen

Vedclass · Accepted Answer

$5:3$

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(A) In $Lathyrus$ $odoratus$,the purple color is produced only when both dominant genes $C$ and $P$ are present $(C-P-)$.If either $C$ or $P$ is absent,the flower color is white.We are crossing $CcPp$ (purple) with $Ccpp$ (white).Using the Punnett square or branching method:For $Cc 	imes Cc$,the offspring are $1CC : 2Cc : 1cc$.For $Pp 	imes pp$,the offspring are $1Pp : 1pp$.Combining these,the genotypes are:$1CCPp$ (purple),$1CCpp$ (white),$2CcPp$ (purple),$2Ccpp$ (white),$1ccPp$ (white),$1ccpp$ (white).Total purple $(C-P-)$ = $1 + 2 = 3$.Total white = $1 + 2 + 1 + 1 = 5$.Thus,the ratio of white to purple flowers is $5:3$.

In $Lathyrus$ $odoratus$,dominant genes $C$ and $P$ are required for the production of purple flower color. What will be the ratio of white to purple flowers in a cross between $CcPp$ and $Ccpp$?

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