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Nataliya [291]
2 years ago
6

2. What role does the environment play in the evolution of lactase persistence?

Biology
1 answer:
timofeeve [1]2 years ago
3 0

Answer: the need of evolution

Explanation: Charles Darwin saw the differences between the birds beaks in the Galapagos island. The beaks were different because of the different food that the environment provides.

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Explanation:

In scientific investigations, the best way to determine the effect of certain experimental factor on the population of study is to have a baseline for comparison. This is usually referred to as controlled experiment.

<em>In the case of the observation that chytrid infection in amphibians seems to be inhibited by Janthinobacterium lividum, the best way experimental design is to get a population of amphibians suffering from the disease, divide them into two groups and subject them to the same conditions except the introduction of Janthinobacterium lividum to the skin of one of the groups.</em>

<em>A suitable method can thereafter be employed to measure the rate at which infection proceeds in both population. If indeed, the bacterium has the capacity to inhibit the infection, the rate of infection in the group with the bacterium will be significantly less than that of the group without the bacterium. </em>

The correct option is C.

<em />

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