If you want to dig up a bit more, have a look at this publication and its references. People adapt genetically to sustained cultural changes, like new diets. ... non-genetic factors like more schools could counteract and even eclipse the effect. Any genetic factors that make you less likely to reproduce are going to be selected against. Natural Selection Is Causing a Decline in Human 'Education Genes', Say Scientists . In the end, the trait 'high metabolism' will have more chances to be transmitted, as well as the behavior associated with. It is about the effects of human selection (angling) on fish behavior. The basic mechanisms are the same as natural selection. Although it does shield people from other forces, culture itself seems to be a powerful force of natural selection. These graphs show three ways this can happen. by Heather Landry Summary: The vast diversity in gene sequences are what create the large variety of plants and animals we see today. Selection certainly does still have an effect humans, however from experience, there are a number of people who are not necessarily happy with the direction in which natural selection is taking. The three ways natural selection can affect a population is through directional selection, stabilizing selection, and disruptive selection. Behavior can also be shaped by natural selection. Although these factors are also selection pressures in natural reproduction, the limited availability of IVF enhances their importance. In humans, for example, males and females have different heights and body shapes. ... To be clear, this does not necessarily mean that humans are getting dumber - we’re going to need a whole lot more evidence to get anywhere near a conclusion like that. Genetic diversity is crucial for adapting to new environments, as more variation in genes leads to more individuals of a population having favorable traits to withstand harsh conditions. Other selection factors that influence subfertile patients' access to IVF include smoking, human immunodeficiency virus/hepatitis infection, psychiatric disease, sex-hormone responsive cancers and a frozen pelvis. Behaviors such as birds' mating rituals, bees' wiggle dance, and humans' capacity to learn language also have genetic components and are subject to natural selection. https://www.livescience.com/445-darwin-natural-selection-work-humans.html "Without a doubt, natural selection occurs in modern humans," agrees Jacob Moorad, an evolutionary biologist at Duke University in Durham, North Carolina, who was not involved in the study. Natural selection is the ability to survive and reproduce in whatever environment an organism finds itself in. The male blue-footed booby, shown to the right, exaggerates his foot movements to attract a … Eventually, only individuals with those favorable adaptations will survive, which is how the species changes over time or evolves through speciation. 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