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Negative Assortative mating e Tendency to select mates of a different phenotype from your own e Opposite of yourself Interbreeding e Mating individuals that are genetically closely related Increased chance offspring will inherit 2 recessive alleles for a dangerous traits Ex. sickle cell anemia,hemophilia European royalty descended from Queen Victoria Red squares are males with hemophilia Queen victoria was the carrier of hemophilia, and her kids kept passing it Close inbreeding can sometimes go very badly e Long term inbreeding can create problems e Ex. neanderthals Unit 4:Primates 4.1 Primate Characteristics e Humans belong to the order primata, we are primates like monkeys and apes e Within the animal kingdom and within mammals, primates are a very unique group e Humans possess some characteristics unique from other primates, we also have most of those characteristics that are typical of primates that distinguish primates from other groups Why do Physical Anthropologists Study Primates? e Two main reasons: