Suppose that out of 1000 offspring's in the generation of a dithered cross, 748 are tall and hairy, 6 are tall and smooth, 4 are short and hairy and 242 are short and smooth. what is the explanation for this kind of ratio ?
Correct answer: B. Linkage and crossing over
- A. Presence of multiple alleles
- B. Linkage and crossing over
- C. Presence of lethal genes
- D. Sex-linkage
Explanation
The two parental combinations are far more frequent than the two new combinations, showing linkage with occasional crossing over. Multiple alleles and sex linkage do not explain this characteristic excess of parental types.
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