from 1,000 individuals each year 1925 to 2000 and is show in the data table below. Year Tongue Rolling Inability to Roll Tongue 1925 67% 33% 1950 68% 32% 1975 63%

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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  1. The ability to roll your tongue is a dominant genetic trait passed on from generation to generation. Tongue rolling is the ability to roll the lateral edges of your tongue upward into a tube. The frequency of the tongue rolling trait was collected from 1,000 individuals each year 1925 to 2000 and is show in the data table below.

Year

Tongue Rolling

Inability to Roll Tongue

1925

67%

33%

1950

68%

32%

1975

63%

37%

2000

67%

33%

 

(a)   Determine if the human population was in equilibrium from 1925 to 2000. Justify your response.

(b)   (b)  Discuss how the Hardy Weinberg Principle can be used to determine whether this population is evolving

(c)   (c)  Identify and describe THREE factors that would affect whether the population of Tongue Rollers is in Hardy Weinberg equilibrium.

(d)   (d)  A scientist recently stated a claim that it is unlikely that the inability to roll your tongue will disappear from the population. Provide reasoning to explain how evidence supports the scientist’s claim.

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