LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 9781319145125
Author: Sadava
Publisher: MAC HIGHER
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Chapter 20.2, Problem 2R
Summary Introduction
To review:
The traits evolved by the changes through the genetic drift and the ones, which evolve by the natural selection.
Introduction:
The genetic drift and the natural selection both are the processes of evolution. The genetic drift can be defined as the changes, which occur in the population due to a chance event. The natural selection can be defined as the changes in the population, which occur due to the selection of a specific trait by nature.
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LIFE: THE SCIENCE OF BIOLOGY
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- The dog breed West Highland Terrier is a product of artificial selection. Give a brief description of the breed and its desired traits. What wild ancestor did it come from? Was it produced with selective breeding or genetic engineering (i.e. genetically modified)? What are the benefits of artificial selection in this case? Are there potential negative consequences?arrow_forwardNatural Selection Affects the Frequency of Genetic Disorders Will a recessive allele that is lethal in the homozygous condition ever be completely removed from a large population by natural selection?arrow_forwardHow does natural selection act on genetic variation? How can this lead to adaptations? How can a change in allele frequency mechanize evolution?arrow_forward
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