Can you please help me with question( 9)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. **Figure 2. Relationship between Skin Reflectance and Latitude.**This figure shows how skin reflectance changes with latitude. Negative latitudes are south of the equator (located at 0°), and positive latitudes are north of the equator. Available reflectance data from multiple sources were combined to form 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.)**Explanation of the Graph:**- **Y-axis:** Skin reflectance percentage (%)- **X-axis:** Latitude, ranging from -40 to 60 degrees- **Observation:** The graph indicates that skin reflectance decreases as you move from high positive latitudes towards the equator, reaching a minimum reflectance near the equator and then increasing as you move towards high negative latitudes.

Large amount of melanin present in a person shows the dark pigmentation whereas lesser amount of…

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Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Can you please help me with question( 9)

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.

**Figure 2. Relationship between Skin Reflectance and Latitude.**

This figure shows how skin reflectance changes with latitude. Negative latitudes are south of the equator (located at 0°), and positive latitudes are north of the equator. Available reflectance data from multiple sources were combined to form 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.)

**Explanation of the Graph:**

- **Y-axis:** Skin reflectance percentage (%)
- **X-axis:** Latitude, ranging from -40 to 60 degrees
- **Observation:** The graph indicates that skin reflectance decreases as you move from high positive latitudes towards the equator, reaching a minimum reflectance near the equator and then increasing as you move towards high negative latitudes.

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