Sexy son hypothesis
Videos
The sexy son hypothesis in evolutionary biology and sexual selection, proposed by Patrick J. Weatherhead and Raleigh J. Robertson of Queen's University in Kingston, Ontario in 1979, states that a fema
European pied flycatcher (Ficedula hypoleuca)
Ronald Fisher in 1912
Guianan cock-of-the-rock (Rupicola rupicola)
The successful sperm is the one that fuses with the egg.
Mate choice
Videos
Mate choice is one of the primary mechanisms under which evolution can occur. It is characterized by a "selective response by animals to particular stimuli" which can be observed as behavior. In other
Sexy son hypothesis
…selection, proposed by Patrick J. Weatherhead and Raleigh J. Robertson of Queen's University in Kingston, Ontario in 1979, states that a female's ideal mate choice among potential mates is one whose genes will produce males with the best chance of reproductive success. This implies that other benefits the father…
Mate choice is highly visible in lek mating. Here, black grouse males gather in a quagmire and the females then arrive and observe the male before choosing one.
Ronald Fisher in 1913
The peacock tail in flight, the classic example of a Fisherian runaway
A male satin bowerbird guards its bower from rival males in the hopes of attracting females with its decorations.