Behavior geneticists - the study of genetic and environmental influences on behaviors., Zygote - when the egg and sperm from your biological mother and biological father fused,, Genome - collection of genetic information and it is contained in the nucleus of every cell in your body., 46 - Number of chromosomes, 23 - Number of pairs of chromosomes, DNA - What is chromosome if made of, genes - smallest pieces of DNA that communicate information to generate important proteins, traits - a genetically determined characteristic., heredity - Passing on of traits through reproduction, Evolutionary psychologists - study how natural selection has shaped common behavioral tendencies or traits, Natural selection - is the differential survival and reproduction of individuals due to differences in phenotype, Charles Darwin - put forward the basis of natural selection, Thomas Bouchard - performed a famous “twin study”, Down's syndrome - which occurs as a result of an extra chromosome on pair 21 (Links to an external site.), and causes varying degrees of intellectual disability in addition to differences in appearance., Turner's syndrome - in which only one chromosome is present for gender (a single X), causes shortness and differences in sexual development, Klinefelter's syndrome - occurs when there are three chromosomes for gender: XXY, PKU - is a disorder caused by a recessive gene, meaning that both parents must contribute a recessive gene for PKU in order for it to present phenotypically, as a physical reality.,

Psychology

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