Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 20.2, Problem 1R
Summary Introduction
To review:
The necessity of mutation for the evolutionary processes.
Introduction:
The mutation can be defined as the changes in the sequence of the genome of an organism. These are permanent alterations, which lead to the change in the sequence of genomic DNA (deoxyribonucleic acid). It can be caused by the radiations or chemicals. The mutation is basically alteration in the
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Chapter 20 Solutions
Life: The Science of Biology
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- What is a gene? Why are regulatory genes important to the evolutionary process? What is a mutation as defined in this course and readings. Are the end results of a mutation always "good" or always "bad"? Or is a mutation perhaps neither always good or always bad and could be "neutral or no effect" or "adaptive" in some situations? Does it depend on the gene, amino acid, protein, and case-by-case scenario? What genetic evidence suggests that humans are a part of a biological continuum with all life forms. Does the number of genes in a biological organism correlate, predict, or denote the complexity of the organism? Does the number of chromosomes in a biological organism correlate, predict, or denote the complexity of the organism?arrow_forwardHow does DNA being the universal molecules of inheritance in all cells support evolutionary theory?arrow_forwardWhat is meant by biological evolution?arrow_forward
- How do biochemistry and molecular genetics contribute to the evidence that evolution has occurred?arrow_forwardDiscuss the significance of mutations and explain the role of the environment in the evolutionary process. (Hint: Consider Lenski's study and what is demonstrated. Do not re-tell Lenski’s study)arrow_forwardHow is evolutionary (genetic) change measured, and how is the cause determined?arrow_forward
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