The distribution of epidermal melanin shows a remarkable diversity in human populations and, in this sense, it is an atypical trait. Statement 1: Numerous genetic studies have indicated that the average proportion of genetic variation due to differences among major continental groups is just 10-15% of the total genetic variation. Statement 2: Skin pigmentation shows large differences among continental populations. Statement 3: The distribution of skin pigmentation can be traced back primarily to the strong influence of natural selection, which has shaped the distribution of pigmentation according to a latitudinal gradient. a. All three statements are false. b. Statements two and three are true but statement one is false. c. Statements one and two are true but statement three is false.
The distribution of epidermal melanin shows a remarkable diversity in human populations and, in this sense, it is an atypical trait. Statement 1: Numerous genetic studies have indicated that the average proportion of genetic variation due to differences among major continental groups is just 10-15% of the total genetic variation. Statement 2: Skin pigmentation shows large differences among continental populations. Statement 3: The distribution of skin pigmentation can be traced back primarily to the strong influence of natural selection, which has shaped the distribution of pigmentation according to a latitudinal gradient. a. All three statements are false. b. Statements two and three are true but statement one is false. c. Statements one and two are true but statement three is false.
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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The distribution of epidermal melanin shows a remarkable diversity in human populations and, in this sense, it is an atypical trait.
Statement 1: Numerous genetic studies have indicated that the average proportion of
Statement 2: Skin pigmentation shows large differences among continental populations.
Statement 3: The distribution of skin pigmentation can be traced back primarily to the strong influence of natural selection, which has shaped the distribution of pigmentation according to a latitudinal gradient.
a. All three statements are false.
b. Statements two and three are true but statement one is false.
c. Statements one and two are true but statement three is false.
d. All three statements are true.
e. Statements one and three are true but statement two is false.
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