Scenario #2
In 2001, a population of 2,500 poison dart frogs lived in the Amazon rain forest. Due to increased deforestation, the population dwindled to 25 frogs in 2019. New government regulations were enacted in 2022, successfully putting an end to the deforestation of the Amazon rain forest.

Once deforestation was stopped, the poison dart frog population was able to recover. By 2050, the population reached 8,000 frogs. Of that population, 20 are homozygous recessive for being spotted (ss genotype).

q2 –

q –

p –

p2 –

2pq –

Conclusion Questions
Use this information to help you answer the following questions:
The original population’s actual genotype frequencies were: SS – 0.9025, Ss – 0.095, ss – 0.0025.

1. Is the current population in Hardy-Weinberg equilibrium? Yes or No

2. Is the current population evolving? Yes or No

3. If the current population is evolving, what type of effect is responsible for genetic drift?