In diploid organisms, dominance refers to the phenomenon whereby one allele masks the phenotypic expression of another at the same locus. Since Mendel’s early observations, dominance has been ...

Populations live in rapidly changing environments—droughts come and go, food sources change, human activities reshape habitats. For scientists, this raises a fundamental puzzle: How do populations ...

In Mendelian inheritance patterns, you receive one version of a gene, called an allele, from each parent. These alleles can be dominant or recessive. Non-Mendelian genetics don’t completely follow ...