How Can Gene Duplication Provide an Evolutionary Pathway by Which

question 27

Multiple Choice

How can gene duplication provide an evolutionary pathway by which a protein can switch functions without loss of the original function?

• A) Gene duplication results in two identical genes that both preserve the same function.
• B) A pair of duplicated genes initially perform the same functions, but both genes acquire mutations that change their function.
• C) When a gene is duplicated, it rapidly acquires mutations that make it no longer functional.
• D) An extra copy of a working gene is formed that can gain a new function without changing the function of the original gene.

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Definitions:

Price Elastic

A term related to price elasticity, which measures the responsiveness of the quantity demanded of a good or service to a change in its price.

Fewer Substitutes

A market condition where there are limited alternative products or services available, potentially leading to higher prices or less choice for consumers.

Unit Elastic

Describes a scenario where a change in the price of a good results in a proportional change in the quantity demanded or supplied.

Total Revenue

The total amount of money a firm receives by selling goods or services.