Search results
Results from the WOW.Com Content Network
Fecundity selection, also known as fertility selection, is the fitness advantage resulting from selection on traits that increases the number of offspring (i.e. fecundity). [1] Charles Darwin formulated the theory of fecundity selection between 1871 and 1874 to explain the widespread evolution of female-biased sexual size dimorphism (SSD ...
The first model of interlocus sexual conflict, the genetic threshold model, was developed by Parker to explain sexual conflict among yellow dung flies. [2] Further investigation of sexual conflict theory remained relatively untouched until Rice predicted that genes for sexually antagonistic traits exist at the same loci of the sex chromosomes in both sexes, which led to the development of ...
Drosophila melanogaster (shown mating) is an important model organism in sexual conflict research.. Sexual conflict or sexual antagonism occurs when the two sexes have conflicting optimal fitness strategies concerning reproduction, particularly over the mode and frequency of mating, potentially leading to an evolutionary arms race between males and females.
European pied flycatcher Ronald Fisher in 1912. 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, [1] 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.
In 2013, Fritzsche and Arnqvist tested Bateman's principle by estimating sexual selection between males and females in four seed beetles. They used a unique experimental design that showed sexual selection to be greater in males than in females. In contrast, sexual selection was also shown to be stronger for females in role-reversed species.
Nursing infants among images of divinities, plant life, flowing water, and animals promoting fecundity on the Ara Pacis (1st century BC), contemporary with the ius liberorum of Augustus The jus trium liberorum (Latin, "the right of three children"; also spelled ius ), [ 1 ] was a privilege awarded to Roman citizens who had produced at least ...
The reproduction of rats follows an r-selection strategy, with many offspring, short gestation, less parental care, and a short time until sexual maturity. The same applies to mice. In r/K selection theory, selective pressures are hypothesised to drive evolution in one of two generalized directions: r - or K-selection. [2]
It is a theory that suggests that behavioral as well as physiological factors may play a role in the level of recessive genetic disorders in a population. [ 2 ] According to Andrew Overall of the University of Edinburgh , "Reproductive compensation may be particularly significant where economic or social factors mean that families are small ...