Question

Evolution of the Influenza Virus Quick Check:

(the answers are surrounded by these stars → ✧✧)

Q1) Why did 40% of the human population evolve to tolerate lactose?

✧ Within cultures that rely on milk-producing animals, individuals who tolerated lactose had a survival advantage. ✧

Q2) What is the difference between genetic drift and natural selection?

✧ Genetic drift is the random increase or decrease of certain genes in a population; natural selection is not random. ✧

Q3) What is an interferon?

✧ An interferon activates the body’s immune system response to a virus. ✧

Q4) Why is there such a wide variety of immune system responses between hosts when they are infected with the same virus?

✧ Slight variations due to mutations in the virus trigger different responses in people. ✧

Q5) Is the following statement true? “Antigenic drift and other mutations to the DNA of viruses are always beneficial for the virus.”

✧ No, because mutated viruses are may be less likely to replicate. ✧

Answer 1

all correct thx

Answer 2

Thank you jaida it’s all correct

Answer 3

Thank you so much its correct <3

Answer 4

Thank you soooo much 🥹

Answer 5

all correct

Answer 6

still correct thanks!

Answer 7

100% correct

Answer 8

100% correct!! Thanks a bunch!!

Answer 9

Ty luv

Answer 10

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