Can Twins Have Different Fathers? Heteropaternal Superfecundation
Fraternal twins can have different biological fathers when two ova are fertilized by sperm from different men during one fertile interval.
Category Genetics
Genetic Hypergamy: Evolutionary Genetics of Mate Choice
“Genetic hypergamy” describes a pattern where, over many generations, more women than men leave descendants in the population and where female mate choice tends to favor partners with traits linked to higher reproductive success. The term is descriptive rather than…