Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 14, Problem 2DAA
Summary Introduction
To determine: The country whose native people have the darkest and the lightest skin.
Introduction: Melanosomes in skin synthesize melanin pigment and account for the human skin color. Melanin pigment accounts for dark skin color. More melanin pigment provides protection against UV radiations and reflects less light. The inter-individual variation is seen in skin colors due to differences in cellular distribution of melanosomes and the amount of melanin they form.
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Human Skin Color: Evidence for Selection
Name:
Jayden Bodisto
Make observations of the Figure below. Then complete the portion below.
Erythemal UV index
80
0
09-
KNMI/ESA
-120
0
-120
2
4
-60
6
8
10
60
Clear-sky
24 September 2015
120
10
60
12
14
120
16
-60
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 antimeridian (180° east and -180° west). (Source:
European Space Agency, http://www.temis.nl/uvradiation/UVindex.html.)
The Driving Question: What is the relationship between UV radiation and skin color?
What do I see?
List specific things you…
Can you please help me with this question
13. Describe the relationship between folate levels and UV exposure. Use specific data from the graph to support your answer.
Chapter 14 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 14 - Constructing a pedigree is particularly useful...Ch. 14 - Prob. 2SQCh. 14 - Prob. 3SQCh. 14 - Prob. 4SQCh. 14 - Prob. 5SQCh. 14 - A trait that is present in a male child but not in...Ch. 14 - Color blindness is a case of ______ inheritance....Ch. 14 - A female child inherits one X chromosome from her...Ch. 14 - Prob. 1DAACh. 14 - Prob. 2DAA
Ch. 14 - Prob. 3DAACh. 14 - Prob. 9SQCh. 14 - Expression of the SRY gene on the Y chromosome...Ch. 14 - Prob. 11SQCh. 14 - Prob. 12SQCh. 14 - Prob. 13SQCh. 14 - Prob. 14SQCh. 14 - Match the chromosome terms appropriately. ____...Ch. 14 - Prob. 1GPCh. 14 - Does the phenotype indicated by the red circles...Ch. 14 - Human females have two X chromosomes (XX); males...Ch. 14 - A mutated allele responsible for Marfan syndrome...Ch. 14 - The somatic cells of most individuals with Down...Ch. 14 - Mutations in the genes for clotting factor VIII...
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