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 ...

Retinitis pigmentosa (RP) is an eye condition that can be genetic. In this way, people usually need to inherit two copies of a genetic variation that causes RP, one coming from each parent. RP may ...

Hands of a child learning about patterns of size and color with colorful wooden blocks. Source: myboys/Shutterstock Part of what makes us human is the need for our brains to search for meaning. Good ...