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This Concept Map, created with IHMC CmapTools, has information related to: Untitled, Evolution in Expression of the Enzyme Lactase Correlated with Specific alleles in the gene and specific populations, Phylogenetic analysis of the evolution of lactose digestion in adults What we find... Humans tolerate lactose less as they grow from infancy, Evolution in Expression of the Enzyme Lactase introduces Evolution in Lactose Gener Variation, Evolution of Lactose Intolerance introduces Evolution in Lactose Gener Variation, Northern Europeans,descendants in North America and Australia, and Northern &Eastern Africans How was this tested? Stastical Methods, Increase in cattle procurement and care-taking. There was a need to take better care of cattle, causing various mutations to stay in the population Due to Some Human populations becoming more dependent on milk based products., Specific alleles in the gene and specific populations Which in turn sums up to Each population expresses the enzyme lactase with a different allele, Northern Europeans,descendants in North America and Australia, and Northern &Eastern Africans Why do some have high LDC? Consumption of Fresh milk, Each population expresses the enzyme lactase with a different allele How was this concluded? It was known that only one allele was responsible for the expression of the enzyme lactase., Evolution in Expression of the Enzyme Lactase introduces Phylogenetic analysis of the evolution of lactose digestion in adults, Evolution of Lactose Intolerance introduces Phylogenetic analysis of the evolution of lactose digestion in adults, Northern Europeans,descendants in North America and Australia, and Northern &Eastern Africans How was this tested? Phylogenetic Comparative Method, Evolution in Lactose Gener Variation Caused by Increase in cattle procurement and care-taking. There was a need to take better care of cattle, causing various mutations to stay in the population, Why was it that only certain alleles applied for ceratin populations in expressing lactase enzyme? And some Groups could digest and absorb water content of milk as opposed to those who were lactose intolerant, Testing for that one allele in populations and finding out other alleles were responsible for expressing the enzyme lactase The question is... Why was it that only certain alleles applied for ceratin populations in expressing lactase enzyme?, There specific regions with the ability to handle high LDC Which is.. Lactose Digestion Capacity High LDC is due to intestine being able to restrain high levels of lactase in the small intestine after infancy, Phylogenetic analysis of the evolution of lactose digestion in adults What we find... There specific regions with the ability to handle high LDC, Some Human populations becoming more dependent on milk based products. How do we Know? Higher frequency of Lactose persistance have been found in areas where fossil evidence has shown long history with cattle., Each population expresses the enzyme lactase with a different allele These populations are Northern Europeans,descendants in North America and Australia, and Northern &Eastern Africans, Northern Europeans,descendants in North America and Australia, and Northern &Eastern Africans Why do some have high LDC? Groups could digest and absorb water content of milk as opposed to those who were lactose intolerant