Alzheimer's disease (AD) is a neurodegenerative disorder characterized by the progressive degradation of brain cells, as well as an associated decline in memory and other mental functions. Earlier ...

In general, humans have the same genes. A number of genes are varied. These control our physical traits and health. Each variation is called an allele. You inherit two alleles for each gene. One comes ...

Because of natural selection, different alleles are more likely to confer a survival advantage in different environments. Cycles of infectious disease prevalence and virulence often reflect natural ...

Alcohol-use disorders have a significant genetic component to their development. New findings show that heavy drinkers with the G allele of the A118G polymorphism of the mu-opioid receptor gene have ...