Natural Selection, Operating on Which of the Following Genetic Changes

question 8

Multiple Choice

Natural selection, operating on which of the following genetic changes, most likely resulted in the loss of ventral spines in modern freshwater sticklebacks?

• A) duplication of the Pitx1 gene
• B) deletion of the Pitx1 gene
• C) point mutations in the Pitx1 gene
• D) silencing of the Pitx1 gene

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Definitions:

Industrial Regulation

Regulatory policies and procedures designed to control or supervise industries with the goal of promoting fair competition, reducing monopoly power, and protecting consumer interests.

Fair Return Price

A fair return price is a price level set for a product or service that allows a company to cover its costs while earning a reasonable profit, often discussed in the context of regulated industries.

Herfindahl Index

A measure used to calculate the level of concentration in a market, indicating the competitiveness of the market.

Market Shares

The portion of a market controlled by a particular company or product, often expressed as a percentage of total sales in that market.