Trivers-Willardova hipoteza

• Post by: Psyche General
• 23.07.2024.
• Comments off

Sažetak

Trivers-Willardova hipoteza podrazumijeva da će omjer muških i ženskih
potomaka biti pristran ovisno o stanju roditelja. Roditelji u boljem stanju vjerojatnije će
imati sina, a oni lošijeg stanja vjerojatnije će imati kćer. Taj efekt registriran je kod mnogih
vrsta uključujući i ljude, iako su u njihovom slučaju nalazi manje jednoznačni. Prošireni
oblik hipoteze (generalizirana Trivers-Willardova hipoteza) pretpostavlja da će na
pristranost spolnog omjera utjecati bilo koji faktori koji dovode do različitog reproduktivnog
uspjeha potomaka. Ovaj oblik hipoteze također je dobio značajnu potporu.

Ključne riječi: Trivers-Willardova hipoteza, spolni omjer, generalizirana Trivers-Willardova hipoteza

Abstract

The Trivers-Willard hypothesis indicates that the ratio of male and female offspring will be
biased depending on the conditions of the parents. Parents in better conditions are more likely to have a son, and parents in poor conditions are more likely to have a daughter. This effect has been observed in a number of species including people, although findings are less conclusive in their case. The extended form of the hypothesis (generalised Trivers-Willard hypothesis) suggests that the biased sex ratio will be influenced by any factor that leads to differential reproductive success. This form of the hypothesis has also received notable support.

Keywords: Trivers-Willard hypothesis, sex ratio, generalised Trivers-Willard hypothesis