Evolution 3 Study Aid John M Kennedy 1. Huntington's chorea involves brain degeneration after age 30, with death within 15 years. Proper diet alleviates fully. Alternatively, our DNA can be examined. Likewise, if the home cages were made uniformly unstimulating the differences vanished.
Environment can make a difference, of course.
Molecular genetics maps the sequences of CGTA 'rungs'. Females risk scores were lower and their MZ and DZ scores were not significantly different. Studies in Sweden found adopted children from alcoholic parents were more likely to become alcoholics than the norm.