A deviation from normal Mendelian ratios,which may be resolved by counting and/or controlled crosses,is seen in which of the following terms?
A) pleiotropy
B) codominance
C) incomplete dominance
D) complete dominance
E) penetrance and expressivity

Question

Quizplus · Accepted Answer

Penetrance and expressivity can lead to deviations from expected Mendelian ratios because they involve the degree to which a particular genotype is expressed in the phenotype. Penetrance refers to the likelihood that a gene will be expressed at all, while expressivity measures the extent of expression among individuals with a given genotype. These variations can result in observed phenotypic ratios that differ from the classic Mendelian predictions.

A Deviation from Normal Mendelian Ratios,which May Be Resolved by Counting