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Unformatted text preview: o Shorter limbs in colder environments Bergmann’s Rule-1874 Carl Bergmann o There are less massive species of warm blooded animals living near the equator o Greater bulk found in colder regions o Big animals have larger body mass results in more heat being produced Skin Color-Carotene o Turn orange (carrots)-Hemoglobin o Red cheeks-melanin o produced by melanocytes specialized cells approx. same number of melanocytes in all humans produced of melanin is a polygenic trait ABo Blood Groups-four blood types in this system o A o B o AB o o Codominance-A and B are co-dominant-When both are inherited, both are expressed-o is recessive-What are the possible genotypes of type A and B blood Genotypes-AA-Ao-BB-Bo-AB-oo A x B X A o B AB Bo o Ao oo...
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- Fall '03
- ABO blood group system, Tay Sachs disease, Eastern European Jews, Bo AB oo