Question 6 (1 point) The ability to drink milk as an adult a) is rare in humans and appears to be the result of genetic drift with no selective advantage. b) develops in individuals who are continuously exposed to milk as they grow older. c) probably evolved as an adaptation to the presence of dairy cattle. d) arose with the transfer of genes from dairy cattle into human groups via a mosquito vector.
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This trait is not present in all humans, and it is thought to have evolved as an adaptation to the presence of dairy cattle. Show more…
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The ability to drink milk as an adult Group of answer choices is rare in humans and appears to be the result of genetic drift with no selective advantage. develops in individuals who are continuously exposed to milk as they grow older. probably evolved as an adaptation to the presence of dairy cattle. arose with the transfer of genes from dairy cattle into human groups via a mosquito vector.
Caroline J.
Sri K.
Evolutionary physiologists believe some human populations recently evolved the ability to digest lactose as adults after they domesticated large mammals. Which of the following statements accurately reflects what we think happened early on during that process? A Individuals in those populations who possessed alleles that lead to increased lactase synthesis as adults had higher fitness than individuals in those populations with other lactase alleles. B Because individuals in those populations started drinking the milk of their domesticated animals, mutations occurred in their lactase genes that increased lactase production. C Because individuals in those populations started drinking the milk of their domesticated animals expression of their existing lactase genes increased, and this change was passed on to their offspring. D Because individuals in those populations started drinking the milk of their domesticated animals, lactase genes from those animals were incorporated into the human genome through horizontal gene transfer.
Madhur L.
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