Genomic imprinting is associated with-: (A) Silencing of paternal chromosome, (B) Silencing of maternal chgromosome, (C) Angelman syndroma, (D) All
Answer is D. Ans. is 'a' i.e., Silencing of paternal chromosome; 'b' i.e., Silencing of maternal chromosome; `c' i.e., Angelman syndroma Prader Willi Syndrome Deletion occurs exclusively on paternal chromosome 15 (deletion of band q 12 in long arm of chromosome 15) Features : Diminished fetal activity Hypotonia Obesity Mental retardation Sho stature Hypogonadotropic hypogonadism