Suppose that out of 1000 offsprings 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 ?

A. Linkage and crossing over

B. Presence of lethal genes

C. Presence of multiple alleles

D. Sex-linkage

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