After watching the “Got Lactase?” video, which statement would you say most accurately describes human evolution? Humans stopped evolving with the advent of modern medicine. Humans continued to evolve until the species adapted to pastoralism and agriculture, then we stopped evolving. Humans are still evolving and will continue to evolve through natural selection and the other evolutionary forces. Human evolution ended 200/300,000 years ago when humans (Homo sapiens) became a distinct species. Question 16Tips0.5 / 0.5 ptsWhich discovery supports the hypothesis that evolution of lactase persistence was caused by the use of milk in pastoralist cultures? Most human cultures today drink milk and most people worldwide are lactase persistent. The lactase gene is present both in humans and in domesticated animals. Ancient pots used to hold milk are about the same age as the lactase persistence mutations. Question 17Tips0.5 / 0.5 ptsWhy could drinking milk have provided strong favorable selection for lactase persistence? The mutations associated with lactase persistence increased in frequency in all populations around the world around 10,000 years ago. Genetic analysis suggests that the mutations associated with lactase persistence were passed down very slowly from generation to generation. In pastoralist populations, individuals with the lactase-persistence mutations were more likely to survive, reproduce, and pass on their alleles than people without the mutations, especially in times of famine. Question 18Tips0.5 / 0.5 ptsThe evolution of lactase persistence has both a cultural and genetic component. True False IncorrectQuestion 19Tips0 / 0.5 ptsGeneticists have identified a single mutation for lactase persistence that originated in Europe and later spread to other parts of the world. True False Question 20Tips0.5 / 0.5 ptsWhen do most animals stop producing lactase? most animals continue to produce lactase their whole lives at weaning when they are adults at birth Quiz SubmissionsAttempt 1: 7This quiz has unlimited attempts Back to Quiz
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After watching the “Got Lactase?” video, which statement would you say most accurately describes human evolution? Humans stopped evolving with the advent of modern medicine. Humans continued to evolve until the species adapted to pastoralism and agriculture, then we stopped evolving. Humans are still evolving and will continue to evolve through natural selection and the other evolutionary forces. Human evolution ended 200/300,000 years ago when humans (Homo sapiens) became a distinct species. Question 16Tips0.5 / 0.5 ptsWhich discovery supports the hypothesis that evolution of lactase persistence was caused by the use of milk in pastoralist cultures? Most human cultures today drink milk and most people worldwide are lactase persistent. The lactase gene is present both in humans and in domesticated animals. Ancient pots used to hold milk are about the same age as the lactase persistence mutations. Question 17Tips0.5 / 0.5 ptsWhy could drinking milk have provided strong favorable selection for lactase persistence? The mutations associated with lactase persistence increased in frequency in all populations around the world around 10,000 years ago. Genetic analysis suggests that the mutations associated with lactase persistence were passed down very slowly from generation to generation. In pastoralist populations, individuals with the lactase-persistence mutations were more likely to survive, reproduce, and pass on their alleles than people without the mutations, especially in times of famine. Question 18Tips0.5 / 0.5 ptsThe evolution of lactase persistence has both a cultural and genetic component. True False IncorrectQuestion 19Tips0 / 0.5 ptsGeneticists have identified a single mutation for lactase persistence that originated in Europe and later spread to other parts of the world. True False Question 20Tips0.5 / 0.5 ptsWhen do most animals stop producing lactase? most animals continue to produce lactase their whole lives at weaning when they are adults at birth Quiz SubmissionsAttempt 1: 7This quiz has unlimited attempts Back to Quiz
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Which discovery best supports the hypothesis that evolution of the lactase-persistence trait was driven by dairying, the use of milk as a source of adult nutrition in pastoralist cultures?Group of answer choicesPresent day milk fats and animal fats can be distinguished using carbon isotope analysis and gas chromatography.Ancient pots used to hold milk are about the same age as the lactase persistence mutations.The lactase gene is present in both humans and domesticated animals.Scientists have discovered unique mutations for lactase persistence in different cultures.
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