Biology, 24.07.2019 18:00 jiminpark12

What kind of evolutionary advantage did lactose tolerance have?

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There are a very few amount of advantages of you having lactose intolerance but one is you have digestive problems it helps a little but the disadvatage is dosen't give all the nutrients refular milk gives you!

Answer from: angelequej1167

I am going to assume you meant lactose intolerance,, so i have written my answer based upon those who are lactose intolerant:
an evolutionary advantage is any trait that can increase the fitness of one person/group of people over another. this means that if someone has a trait that allows them to better obtain food or resources,, they would have an evolutionary advantage to better compete against another species or group of people. being lactose intolerant can allow you a better evolutionary advantage over those who dont in a couple ways. first off,, these people are more likely to live and thrive if dairy goes away. if dairy one day disappears,, most people who are not lactose intolerant will not know how to get those nutrients that the body needs that they had previously gotten from milk. these people would eventually die without these nutrients,, while those who are intolerant to lactose would continue to thrive because they have lived without these things their whole life and now how to get their needed nutrients. along with that,, people with a lactose intolerance are better able to starve off predators if they needed to,, because all they would have to do is kill all the animals that produce dairy. those without a lactose intolerance would have to get rid of a lot more things in order to starve off those with a lactose intolerance.
let me know if you have any further questions
:)

Answer from: Quest

answer: option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation:

Answer from: Quest

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."

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