You decide to use the three videos as a basis to explain that historically, some people, including scientists (of the 19th and early 20th century), have incorrectly used the biological trait of skin color as a marker of attributes not based on science, but behaviors, cultures, and/or identities. For this assignment, write the explanation you’ll provide to AP biology high school students. The explanation should include a very straightforward description of the biological facts of how skin color is determined in an individual based on their genetic makeup. In addition, discuss current ideas on why skin color varies across different human populations based on the geographical origin of their ancestors. Include specifics on the origin of human populations and how environmental factors interacted with important physiological processes generated selective pressure for specific genetic variations in different geographical locations.
To reiterate, you are being asked to write an explanation of 300-400 words (about one page) to create a digestible educational materials for high school AP biology students that includes:
- What is the biochemical basis for differences in skin color in each person?
- The origin of human populations around the world.
- How differences in skin color were subject to selective pressure in different geographical environments and populations.
- Discuss the specific environmental factors and how they interact with various physiological processes.
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