Question

"A population of paramecia grows from 16 to 128. How many generations, or doubling times, has this population undergone?"

Answer 1

3 generations or doublings

Explanation:

It first grows from 16 to 32 = 1 generation , 32 to 64= 1 generation , 64 to 128 = 1 generation, the summary of the generations = 1+1+1= 3 generations