Identifying candidates for a disease gene by positional cloning depends on distinguishing DNA markers that are close to the disease gene from markers that are far away. When the disease gene is close to a marker, there will be
A) a high number of mutations in the intervening DNA.
B) a low rate of recombination between the disease gene and the marker.
C) many alleles at the marker locus.
D) a high chance of locus heterogeneity.
B) a low rate of recombination between the disease gene and the marker.
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Fill in the blank with the appropriate word.
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