Question

Which of the following can be concluded from the Grant's long-term study of the medium ground finch on Daphne Major?

1) Strength of selection varies over time
2) Direction of selection varies over time
3) Size should continue to get larger over time
4) A and B are correct
5) A and C are correct

Answer 1

The Grant's study on the medium ground finch on Daphne Major provides evidence that the strength and direction of selection can vary over time. Additionally, the study shows that natural selection led to an increase in average bill size in the population.

Step-by-step explanation:

The Grant's long-term study of the medium ground finch on Daphne Major provides evidence of the variability of selection over time and the variation in the direction of selection.

During a drought period, the availability of small, soft seeds declined more than that of large, hard seeds. This led to a higher survival rate for birds with larger bills, resulting in an increase in the average bill size in the population. Therefore, the correct conclusion from the Grant's study is that both statements A and B are correct.