4. Genetic Mapping and Linkage
Multiple Cross Overs and Interference
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2PRACTICE PROBLEM
In Drosophila, sepia eyes (se), curled wings (cu) and ebony body (e) are encoded by recessive genes found on chromosome 3. A researcher crosses se cu e/ + + + females with se cu e/ se cu e males and obtains the following progeny data:
The frequency of crossing over is 22% for genes se and cu and 16.6% for genes cu and e. Determine the interference value for this data set.
In Drosophila, sepia eyes (se), curled wings (cu) and ebony body (e) are encoded by recessive genes found on chromosome 3. A researcher crosses se cu e/ + + + females with se cu e/ se cu e males and obtains the following progeny data:
The frequency of crossing over is 22% for genes se and cu and 16.6% for genes cu and e. Determine the interference value for this data set.