The process underlying differences in expression of a gene according to which parent has transmitted is called:
C. Non penetrance
D. Genomic imprinting
Correct answer : D. Genomic imprinting
In genomic imprinting, a gene / group of genes on the paternal or maternal chromosome is selectively inactivated. The functional allele will be provided by the counterpart.
- Angelman syndrome – deletion of maternal gene
- Prader Willi syndrome – deletion of paternal gene