Question

In a population of Beatles, there are green and brown colorations. After a forest fire, only 20 Beatles remain, 18 of them are green, and two are brown. Describe this change in frequency.

a. The frequency of green Beatles decreased, and the frequency of brown Beatles increased.
b. The frequency of green Beatles increased, and the frequency of brown Beatles decreased.
c. The frequency of green Beatles remained the same, and the frequency of brown Beatles remained the same.
d. The frequency of green Beatles decreased, and the frequency of brown Beatles remained the same.

Answer 1

The frequency of green Beatles decreased, and the frequency of brown Beatles increased.

Step-by-step explanation:

The correct answer is a. The frequency of green Beatles decreased, and the frequency of brown Beatles increased. After the forest fire, the population of beetles decreased, and only 20 beetles remained. Out of those 20, 18 were green and 2 were brown. In the original population, the frequency of green beetles was higher than the frequency of brown beetles. But after the forest fire, the frequency of green beetles decreased because most of them didn't survive, while the frequency of brown beetles increased because the majority of the surviving ones were brown.