Question

question 7

how did charles darwin define natural selection?

• the principle by which each slight variation of a trait, if useful, is preserved.
• the entire set of dna instructions found in a cell.
• the process by which living organisms change over time through changes in the genome.
• the connection between biological adaptation and preferences in mate selection.

Explanation:

Analyze Darwin's definition

Charles Darwin introduced the concept of natural selection in his 1859 book, On the Origin of Species. He defined it as the "principle by which each slight variation [of a trait], if useful, is preserved." This aligns with the Evolutionary Perspective of gradual adaptation.

Evaluate the other options

• "The entire set of DNA instructions found in a cell" defines the genome, a modern genetic concept unknown to Darwin.
• "The process by which living organisms change over time through changes in the genome" describes modern evolutionary synthesis, which incorporates genetics.
• "The connection between biological adaptation and preferences in mate selection" refers specifically to sexual selection, which is a distinct sub-concept.

Answer:

• (A) The principle by which each slight variation [of a trait], if useful, is preserved. (Correct answer)
• (B) The entire set of DNA instructions found in a cell.
• (C) The process by which living organisms change over time through changes in the genome.
• (D) The connection between biological adaptation and preferences in mate selection.