In Drosophila,the sex index ratio for a super | vedclass

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(C) According to Bridges' genic balance theory of sex determination in $Drosophila$,the sex of an individual is determined by the ratio of the number

Vedclass · Accepted Answer

$1.5$

Vedclass · Answer

(C) According to Bridges' genic balance theory of sex determination in $Drosophila$,the sex of an individual is determined by the ratio of the number of $X$ chromosomes to the number of sets of autosomes $(A)$.This ratio is known as the sex index ratio.For a normal female,the ratio is $1.0$ $(2X:2A)$.For a normal male,the ratio is $0.5$ $(1X:2A)$.For a super female (metafemale),the ratio is $1.5$ $(3X:2A)$.Therefore,the correct option is $C$.

In $Drosophila$,the sex index ratio for a super female is ....

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