You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The process underlying differences in expression of a gene, according to which parent has transmitted, is called - and explain in detail?
Ans. is 'd' i.e., Genomic imprinting There are functional differences between paternal and maternal genes. So the expression of gene will be different depending on, whether it has transmitted by father or mother. This is called genomic imprinting (also see previous explanations). Anticipation o In genetics, anticipation is a phenomenon where by the symptoms of a genetic disorder become apparent at an earlier age as it is passed to next generation. o In most cases, an increased severity of symptoms is also noted. o Anticipation is seen in trinucleotide repeat disorders, e.g. Huntigton's disease, myotonic dystrophy, Fragile 'X' syndrome and Friedreich ataxia. Mosaicism o Mosaicism is the occurence of two or more different types of cell populations in the same individuals. o For example same individual have cells having 45X and 47, XXX, i.e. - 45 X / 47 XXX mosaic. Nonpenetrance Some individuals inherit the mutant gene but are phenotypically normal. This is referred as nonpenetrance.