In this study, the basis for selection will be not the baby's potential disease, disorder or disability, but simply its sex.RothmanProfessor of sociology at the City University of New York's Baruch College and Graduate CenterBarbara Katz
The gonad develops as an undifferentiated primordium that is initially indistinguishable between XX (female) and XY (male) embryos; the gonad is a uniquely bipotential organ in its ability to give rise to a testis or ovary. Prior to sex determination, the establishment of the gonadal anlage (...
2003). Due to the impact of sexually antagonistic evolution, sexual conflict has been espoused as a major mechanism of evolution (Hosken and Snook 2005), with the ultimate consequences being the potential to lead to divergence within and between species (Parker and Partridge 1998; Gavrilets et ...
Summary1Dispersal behaviour is a potentially risky life-history strategy that can impact habitat use as well as competition over territories and mates.2I studied natural selection on dispersal behaviour over the course of four breeding seasons in a Bahamian population of brown anoles (Anolis sagrei)...
2.Lewis WM jr. The cost of sex. In: Stearns SC. (ed.) The evolution of sex and its consequences, Basel: Birkhäuser; 1987. p33—57. 3.Maynard Smith J. The Evolution of Sex. Cambridge: Cambridge University Press; 1978. 4.Bell G. The Masterpiece of Nature: the Evolution and Geneti...
The adult sex ratio (ASR) is a fundamental concept in population biology, sexual selection, and social evolution. However, it remains unclear which demographic processes generate ASR variation and how biases in ASR in turn affect social behaviour. Here, we evaluate the demographic mechanisms shaping...
PRISMA flow diagram describing the selection of studies for systematic review and meta-analysis. Full size image Characteristics of the included studies A total of thirty-two cross-sectional studies involving 18, 354 study subjects were included to estimate the pooled prevalence of premarital sexual ...
Identifying the target of sexual selection in externally fertilizing taxa has been problematic because species in these taxa often lack sexual dimorphism. However, these species often show sex differences in spawning behavior; males spawn before females. I investigated the consequences of spawning order ...
The widespread presence of same-sex sexual behaviour (SSB) has long been thought to pose an evolutionary conundrum, as participants in SSB suffer the cost of failing to reproduce after expending the time and energy to find a mate. The potential for SSB t
Gershoni M, Pietrokovski S. The landscape of sex-differential transcriptome and its consequent selection in human adults. BMC Biol. 2017;15:7.