a. stabilizing selection b. diversifying selection c. directional selection

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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Match the correct term with each example. 

1. Finches' beaks are specialized to what they eat. If it is a wet season, there are plenty of greens, flowers, and small seeds. Finches with smaller beaks are able to eat more. They, therefore, have a better survival rate. 

2. A population of snails live on rocks on the side of a stream. The population of snails has three phenotypes; dark brown, brown, and light brown. When the rocks are wet, they are dark brown. When the rocks are dry, they are light brown. Dark brown and light brown snails have a higher survival rate. 

3. There is a wide range of birth weight in babies. Babies in the middle range have a better survival rate than babies that are too big or too small. 

a. stabilizing selection

b. diversifying selection

c. directional selection 

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