Phenotypically Wild-Type F₁ Female Drosophila,whose Mothers Had Light Eyes (Lt)and

Short Answer

Phenotypically wild-type F₁ female Drosophila,whose mothers had light eyes (lt)and fathers had straw (stw)bristles,produced the following offspring when crossed to homozygous light-straw males:
$\begin{array}{lr}\text { Phenotype } & \text { Numb } \\ \text { light-straw } & 22 \\ \text { wild-type } & 18 \\ \text { light } & 990 \\ \text { straw } & \text { Total: } \frac{970}{2000}\end{array}$

Compute the map distance between the light and straw loci.