Genetics

Science & Education

Why are some people prettier than others? This question reflects a universal curiosity about variation in human appearance at the level of faces, bodies, and features that cultu...

biology

Hereditary ants refer to lineages and populations of ants in which key behavioral, morphological, and physiological traits are reliably passed across generations through genetic...

evergreen

Some celebrities appear to have parents whose looks differ notably from their own, prompting questions about genetics, aging, and media representation. This evergreen explainer...

human-biology

Human height varies because of combinations of genetic inheritance, early nutrition, health care, and environment. Taller or shorter stature usually reflects complex interaction...

Health & Disability

Down syndrome is a genetic condition caused by the presence of an extra copy of chromosome 21, which affects development and physiology. It occurs in people of all ethnic and so...

Relationships And Society

Twins who marry is an intersection of genetics, law, and family planning that raises understandable questions. This evergreen explainer answers what happens when twins marry, wh...

Relationships

Does gay run in families? Research indicates that sexual orientation has a genetic component and tends to cluster somewhat among biological relatives, but it is not determined b...

human-biology

Identical twins share the same physical features and nearly identical DNA because they begin as a single fertilized egg that splits into two embryos. Also called monozygotic twi...

biography

Alex Trebek was a Canadian television host best known for presenting the long-running quiz show Jeopardy!, a role he held for more than three decades. In 2019, he publicly share...

Relationships

A mother and daughter who share noticeable physical similarities often attract attention, but resemblance is shaped by many factors beyond simple genetics. Traits such as facial...