A child with blood types B, Rh , and M is born to a woman who has blood types O, Rh−, and M and a man who has blood types AB, Rh , and M. Determine the genotypes of each parent. What is the mother’s blood type

blue

light-years

magnitude

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".