Question 1 (1 point) In the Darwin\'s finch case study presented in lecture, bil
ID: 147522 • Letter: Q
Question
Question 1 (1 point) In the Darwin's finch case study presented in lecture, bill depth was measured in more than 600 birds in the population. After the drought, what happened to the average and range of bill depth in the population and why is this important? The range in bill depth in the population decreased over several years. Average bill depth stayed the same. This meant that the population evolved, even if the average trait didn't. The average and range in bill depths in the population increased. This doesn't mean anything The range in bill depth and bill size in the population decreased over several years. The results show that natural selection favored small billed-bird under drought conditions. The average bill depth increased and range in bill depths in the population decreased when a drought occurred. This meant that the population evolved, because big billed- birds were favored during the drought.Explanation / Answer
Q 1) Answer- option 4. Drought favoured birds with bigger bills. Hence, the average bill depth increased, however, range of bill depth in the population decreased.
Q 2) Answer- option 2. Natural selection is the process of choosing fittest trait. If the fitness of all the traits is similar then no natural selection will occur.
Q 3) Answer- option 4. Organisms as a whole evolve by natural selection to match their environmemt.