Variation is high when there are many different allelic forms of all genes and when there are many different combinations of those alleles. However, genetic variation is constantly changing.

His lab previously found widespread evidence of allelic imbalances in the brains of mice and in cultured cells. “[We] discovered that there are some genes where the two alleles are absolutely in ...

J Midwifery Womens Health. 2005;50(3):184-188. For example, in a white population, the most common deleterious allelic variant in the CFTR gene is CFTR delta F508 allele, resulting in the absence ...

This gene, a Y-chromosomal version of gdf6 (gdf6Y), was described in the study "The master male sex determinant Gdf6Y of the turquoise killifish arose through allelic neofunctionalization ...

making it a powerful system to examine the effect of environmental versus genetic effects on opsin expression. Both expression and allelic variation was highly similar within streams, suggesting ...