April 4 notes

2 Pages
Unlock Document

University of Rhode Island
APG 203
Professor Garcia- Quijano

4/4/14 Human biological diversity and the race concept • Obvious problem with skin color is that it doesn’t accurately describe skin color • Many populations don’t fit neatly into any of the three “great races” • Phenotypic similarities and differences do not necessarily have a genetic basis Explaining skin color • Traditional racial classification assumes biological characteristics are determined by heredity o Role of natural selection in producing variation in skin color illustrates explanatory approach to human biological diversity • Skin color us a biological trait influenced by several genes o Melanin- acts as natural sunscreen produced by skin cells responsible for pigmentation o By screening out ultraviolet (UV) radiation from the sun, melanin offers protection against a variety of maladies including sunburn and skin cancer o Before the 16 century very dark skinned populations lived closest to the equator o Outside the tropics, skin color tends to be lighter  Melanin confers a selective advantage on darker skinned people in the tropics Explaining skin color • Loomis- focused on role of UV radiatio
More Less

Related notes for APG 203

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.