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In humans, there is evidence that women will rate men's odor as more pleasant if the odor has MHC-dissimilar antigens, which is proposed as a way of avoiding inbreeding and increasing heterozygosity. [ 26 ] [ 27 ] However, women on contraceptive pills rate the odor of MHC-similar men as being more pleasant, it is unknown why women on ...
MHC-based sexual selection is known to involve olfactory mechanisms in such vertebrate taxa as fish, mice, humans, primates, birds, and reptiles. [1] At its simplest level, humans have long been acquainted with the sense of olfaction for its use in determining the pleasantness or the unpleasantness of one's resources, food, etc.
In humans, females have to endure a nine-month pregnancy and childbirth. [67] Females thus provide a greater biologically obligatory parental investment to offspring than males. [ 67 ] [ 70 ] This provides males with a greater window of opportunity to mate and reproduce than females, hence females are usually more choosy, but males still make ...
With a business application rate of 2,748 and a GDP growth rate of 34%, Cape Coral is a vibrant community for businesses in real estate, construction, and tourism. 14. Wilmington, NC – 67.96 points
Each successive older generation has lower rates, with 14.2% of millennials, 5.1% of Generation X, 3.0% of baby boomers and 1.8% of the Silent Generation.
Sexual selection creates colourful differences between sexes in Goldie's bird-of-paradise.Male above; female below. Painting by John Gerrard Keulemans.. Sexual selection is a mechanism of evolution in which members of one sex choose mates of the other sex to mate with (intersexual selection), and compete with members of the same sex for access to members of the opposite sex (intrasexual ...
In Colombia and Haiti, U.S. funding supports farming and fishing and provides incentives for people to stay rather than migrate to the U.S.
where N is the population, r is the maximum growth rate, K is the carrying capacity of the local environment, and d N / d t (the derivative of population size N with respect to time t) is the rate of change in population with time.