Achromatopsia, a form of colorblindness, affects an estimated 1 in 30,000 people worldwide.  Pingelap is an island and part of the Federated States of Micronesia. In the late 18th century a typhoon hit and the human population on the island went from 500 people to about 20 people. The survivors reproduced and by the 1900s the population was back to about 600 people. However, the incidence for achromatopsia in the Pingelap population is now about 1 in 1,800 people. Which process of evolution has most likely occurred?

A scientist wants to study bird predation of peppered moths. In a natural environment, they put light moths and dark moths on the trunks of trees and observe the moths for 30 minutes. The scientist records if each moth was eaten. What was a controlled variable in this experiment?

How does mutation affect natural selection?

Ra

Helium

Sr

What did John Blassingame conclude about slave personality types?

Effects of the Civil War in the South included all of the following except ________.

Tin

Co