In an inherited form of high cholesterol,rr individuals have a blood cholesterol level greater than 500 mg/dL,Rr individuals are near 300 mg/dL,while normal (RR)cholesterol levels should be less than 200 mg/dL.The R allele is ___ to the r allele.

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In incomplete dominance, the heterozygous phenotype is intermediate between the two homozygous phenotypes. However, in this case, the heterozygous phenotype (Rr) is not exactly intermediate between the two homozygous phenotypes (RR and rr), as the blood cholesterol level of Rr individuals is closer to that of rr individuals than to that of RR individuals. Therefore, the R allele is incompletely dominant to the r allele.

In an Inherited Form of High Cholesterol,rr Individuals Have a Blood