subject
Social Studies, 12.03.2020 06:09 aj0914

How did the drought lead to an increase in beak size in the medium ground finch population? The Grants reasoned that prior to the drought, the finch population fed primarily on small seeds that they could open easily. Although larger, tougher seeds were available, they were not typically eaten, not even by finches with larger beaks. During the drought, only a limited number of small seeds were produced, leaving mostly larger, tougher seeds available for food. Finches that were unable to eat the larger seeds died of starvation.
Based on their observations and the data they collected, the Grants concluded that evolution by natural selection had occurred in the medium ground finch population. The increase in the average beak size of the offspring was a direct result of the change in the food supply during the drought.
In order to have reached this conclusion, the Grants must have either assumed or proven that several other facts about the finch population were true. Which statements represent information that must be true in order for the Grants conclusion to be correct?
Select the three statements that must be true.
a. An individual finch's beak size can change depending on the size of the seeds it eats.
b. Beak size varies among the birds in the finch population under study.
c. Birds that could eat larger, tougher seeds survived and reproduced during the drought.
d. Beak size is an inherited trait in the finch population under study.
e. The drought caused a mutation that led to larger beak sizes in the finch population.

ansver
Answers: 2

Other questions on the subject: Social Studies

image
Social Studies, 21.06.2019 19:30, chrisswid
Which group directly benefits from subsidies? exporters sellers producers importers
Answers: 1
image
Social Studies, 23.06.2019 04:00, bigemma03
In 1914, alabama produced 1.7 million bales of cotton, but three years later produced only 515,000, bales. meanwhile, in georgia, 5.2 million acres of land was dedicated for cotton production in 1914, but by 1923 there were just 2.6 million acres used for growing cotton. all of this was the result of the work of a tiny insect: the boll weevil. alabama and georgia first felt the effects of the boll weevil at different times. what would account for this difference in timing? a) the infestation moved from west to east. b) the infestation moved from east to west. c) georgia had better ways to deal with the problem. d) alabama was further from the insect's point of origin.
Answers: 3
image
Social Studies, 23.06.2019 11:30, airiyannag0113
How did china's location impact trade and its development?
Answers: 1
image
Social Studies, 23.06.2019 14:40, powellmom5
Crops grew well in mesopotamia because a. the land was in mountainous areas. b. farmland was fertile and water was nearby. c. the area was near the ocean water supply. d. the area received adequate rainfall. select the best answer from the choices provided a b c d
Answers: 2
You know the right answer?
How did the drought lead to an increase in beak size in the medium ground finch population? The Gran...

Questions in other subjects:

Konu
Social Studies, 07.05.2020 04:57