Essay
For some single gene disorders, some members of a family who have the same genetic variants at the disease locus as strongly affected family members either show a much milder phenotype or no disease symptoms. List five explanations for why there can be a lack of penetrance or variable expressivity of a single gene disorder.
Correct Answer:

Verified
1) Epigenetic regulation. For example, l...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q17: Which, if any, of the following is
Q18: With respect to autosomal recessive inheritance, which,
Q19: The human X and Y chromosomes are
Q20: What is a founder effect? List three
Q21: What is meant by biological fitness?
Q22: Allele frequencies can change from one generation
Q24: The Hardy-Weinberg law assumes an idealized population
Q25: With respect to autosomal dominant inheritance in
Q26: Which, if any, of the following is
Q27: An individual single gene disorder can show