You cross two inbred tomato varieties with large (strain 1) and small (strain 2)

timer Asked: Apr 20th, 2015

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You cross two inbred tomato varieties with large (strain 1) and small (strain 2) fruit size. In the F2 progeny, you measure the average diameters of fruits on each plant and genotype them at 4 molecular markers ABC, and D which are situated in that order on chromosome 2. You obtain the following average fruit diameters for each genotype at each of the four marker loci:

Mean fruit diameter (cm.)
Marker locusVariety 1 homozygoteHeterozygoteVariety 2 homozygoteLOD score (>3.0 is significant)

 Based on these data, which of the following conclusions is most valid?

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