For this reason, it is important to understand a gene pool as the collective set of alleles whose phenotype may or may not be observable. Tropical butterflies provide an excellent example of ...

Epistasis describes how gene interactions can affect phenotypes. Did you know that genes can mask each other's presence or combine to produce an entirely new trait? But what happens when two ...

Imagine your doctor calls you to discuss the results of your genetic testing. They tell you your results indicate you are ...

Gene therapies to treat rheumatoid arthritis have evolved slowly, but one is ready to move into human trials and an ...

In a new study, researchers have found that changes in two parts of the genome work together to influence alopecia risk.

Each gene might have different forms, and these are called alleles. The diagram shows the relationship between the cell, its nucleus, chromosomes in the nucleus, and genes.

The sickle cell gene may have been brought to Africa by ... individuals carrying mutant CF alleles had a selective advantage, and they disproportionately transmitted those alleles to future ...

Depending on the mechanism restoring the diploid set of chromosomes, offspring can inherit either all or some of the mother's gene variants (alleles). They can therefore be 'full clones' of the mother ...

Since these alleles have been around for more than 5000 years, they may in fact have some evolutionary advantage. “Common [gene] variants have subtle roles across the genome, affecting multiple ...