In Drosophila,crossing over occurs in females | vedclass

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(A) $1$. In $Drosophila$ females,crossing over occurs during meiosis. Since genes $A$ and $B$ are linked with a distance of $10 \ cM$,recombination oc

Vedclass · Accepted Answer

$4 	ext{ types} : 2 	ext{ types}$

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(A) $1$. In $Drosophila$ females,crossing over occurs during meiosis. Since genes $A$ and $B$ are linked with a distance of $10 \ cM$,recombination occurs. The female with genotype $AB/ab$ will produce four types of gametes: two parental types ($AB$ and $ab$) and two recombinant types ($Ab$ and $aB$).$2$. In $Drosophila$ males,crossing over is absent. Therefore,the genes $A$ and $B$ remain linked together. The male with genotype $AB/ab$ will produce only two types of gametes: the parental types ($AB$ and $ab$).$3$. Thus,the female produces $4$ types of gametes and the male produces $2$ types of gametes.

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