Problem 11 Is a random mutation more likely... [FREE SOLUTION]

Chapter 19: Problem 11

Is a random mutation more likely to be beneficial or harmful? Explain your answer.

Short Answer

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A random mutation is more likely to be harmful or neutral than beneficial. The finely-tuned genomes of organisms mean that random changes are likely to disrupt an organism鈥檚 functioning rather than enhance it. However, a mutation's ultimate impact often depends on the organism's environment.

Step by step solution

Understanding mutation

Mutation is a random change in the genetic material of an organism. It could occur in an organism's DNA or RNA, including the alteration of a base pair, the deletion or insertion of a segment of DNA, or even a change in the number of chromosomes. This is vital to understand because the mutation is the foundation for genetic variation, which drives evolution.

Consequences of mutation

A mutation affects an organism in one of the three ways: either it is beneficial, harmful or neutral. A beneficial mutation enhances the survival or reproductive success of an organism, a harmful mutation impairs these capabilities, while a neutral mutation does not have any noticeable effect.

Probability of mutation being beneficial or harmful

Generally, a randomly occurring mutation is more likely to be harmful or neutral rather than beneficial. This is because the genomes of organisms have been finely tuned by millions of years of evolution. Any random change is more likely to disrupt this tuning rather than improve it. However, it's also important to note that the context plays a role. In a different environment or under different circumstances, a mutation that was previously harmful could be helpful.

Wrapping up

In conclusion, while beneficial mutations are essential for evolution, the chance of a random mutation being beneficial than harmful is typically low. However, the overall effect of a mutation often depends on the environmental context.

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Is a random mutation more likely to be beneficial or harmful? Explain your answer.

Short Answer

Step by step solution

Understanding mutation

Consequences of mutation

Probability of mutation being beneficial or harmful

Wrapping up

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