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5. In the film, Dr. Jablonski explains that melanin, located in the top layer of human skin, absorbs UV radiation, protecting cells from the damaging effects of UV. Genetics determines the type of melanin (i.e., brown/black eumelanin or red/brown pheomelanin) and the amount of melanin present in an individual’s cells.  Based on this information, write a hypothesis for where in the world you would expect to find human populations with darker or lighter skin pigmentation (i.e., different amounts of melanin).

5. In the film, Dr. Jablonski explains that melanin, located in the top layer of human skin, absorbs UV radiation, protecting cells from the damaging effects of UV. Genetics determines the type of melanin (i.e., brown/black eumelanin or red/brown pheomelanin) and the amount of melanin present in an individual’s cells.  Based on this information, write a hypothesis for where in the world you would expect to find human populations with darker or lighter skin pigmentation (i.e., different amounts of melanin).

Case Studies In Health Information Management
Case Studies In Health Information Management
3rd Edition
ISBN:9781337676908
Author:SCHNERING
Publisher:SCHNERING
Chapter6: Leadership
Section: Chapter Questions
Problem 6.21.3C
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5. In the film, Dr. Jablonski explains that melanin, located in the top layer of human skin, absorbs UV radiation, protecting cells from the damaging effects of UV. Genetics determines the type of melanin (i.e., brown/black eumelanin or red/brown pheomelanin) and the amount of melanin present in an individual’s cells.  Based on this information, write a hypothesis for where in the world you would expect to find human populations with darker or lighter skin pigmentation (i.e., different amounts of melanin).
 
 
9. Do these data support your hypothesis from Question 5? Justify your answer.

 

SKIN. Figure 2. Relationship between Skin Reflectance and Latitude. This figure shows how skin reflectance changes with latitude. Negative latitudes are south of the equator (lосated at 0°), and 10 20 30 40 50 60positive latitudes are north of the equator. Available reflectance data from multiple sources were combined to form 75 65 55 45 25 15 -40 -30 -20 -10 0 Latitude this graph. All combined data were obtained using a reflectometer with an output of 680 nanometers (i.e., a wavelength of visible light) and placed on the subjects'upper or lower inner arms. (Source: Panel B of Figure 2 in Barsh (2003). Graph originally captioned as “Summary of 102 skin reflectance samples for males as a function of latitude, redrawn from Relethford (1997). " © 2003 Public Library of Science.) Skin reflectance (%)
Transcribed Image Text:SKIN. Figure 2. Relationship between Skin Reflectance and Latitude. This figure shows how skin reflectance changes with latitude. Negative latitudes are south of the equator (lосated at 0°), and 10 20 30 40 50 60positive latitudes are north of the equator. Available reflectance data from multiple sources were combined to form 75 65 55 45 25 15 -40 -30 -20 -10 0 Latitude this graph. All combined data were obtained using a reflectometer with an output of 680 nanometers (i.e., a wavelength of visible light) and placed on the subjects'upper or lower inner arms. (Source: Panel B of Figure 2 in Barsh (2003). Graph originally captioned as “Summary of 102 skin reflectance samples for males as a function of latitude, redrawn from Relethford (1997). " © 2003 Public Library of Science.) Skin reflectance (%)
-120 -60 60 120 -120 -60 60 120 2 4 6 10 12 14 16 18 Figure 1. Ultraviolet Radiation Index across the World. The colors on this map of the world represent Ultraviolet (UV) Index values on a particular day in September 2015. The UV Index is a standardized scale of UV radiation intensity running from 0 (least intense) to 18 (most intense). The y-axis values are degrees of latitude, which range from the equator (0°) to the poles (90° north and -90° south). The x-axis values are degrees of longitude, which range from the prime meridian (0°) to the antemeridian (180° east and –180° west). (Source: European Space Agency, http://www.temis.nl/uvradiati on/UVindex.html.) 60 -60 .....:.... ---.. 09 09-
Transcribed Image Text:-120 -60 60 120 -120 -60 60 120 2 4 6 10 12 14 16 18 Figure 1. Ultraviolet Radiation Index across the World. The colors on this map of the world represent Ultraviolet (UV) Index values on a particular day in September 2015. The UV Index is a standardized scale of UV radiation intensity running from 0 (least intense) to 18 (most intense). The y-axis values are degrees of latitude, which range from the equator (0°) to the poles (90° north and -90° south). The x-axis values are degrees of longitude, which range from the prime meridian (0°) to the antemeridian (180° east and –180° west). (Source: European Space Agency, http://www.temis.nl/uvradiati on/UVindex.html.) 60 -60 .....:.... ---.. 09 09-
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