When the Grants measured the beaks of the birds on Daphne Major after the drought,they found:
A)a large number of the birds had died as a result of the drought
B)the survivors of the drought had a larger average beak size
C)beak size is inherited so the next generation had a larger average beak size
D)all of the above

Question

Quizplus · Accepted Answer

The Grants' research on Daphne Major found that after the drought, many birds had died, the survivors tended to have larger beaks, and this trait was inherited by the next generation, leading to an overall larger average beak size in the population. This is a classic example of natural selection observed in real time.

When the Grants Measured the Beaks of the Birds on Daphne