Single gene defect causing multiple unrelated problems is called?: (A) Pleiotropism, (B) Pseudodominance, (C) Penetrance, (D) Anticipation
Answer is A. Pleotropism refers to single gene defect causing multiple traits. Penetrance- extent to which a paicular gene or set of genes is expressed in the phenotypes of individuals carrying it Pseudodominance- sudden appearance of a recessive phenotype in a pedigree, due to deletion of a masking dominant gene Anticipation- disease manifestation worsen from 1 generation to next