Which of the following is a driving force of intersexual selection?

• A. Mate choice based on physical traits
• B. Random genetic drift
• C. Environmental changes
• D. Competition among individuals of the same sex

Answer: (A)

Verified step by step guidance

1. Understand the concept of intersexual selection: Intersexual selection is a type of natural selection where individuals of one sex (usually females) choose mates based on certain desirable traits in the opposite sex.
2. Identify the key factor in intersexual selection: The primary driving force is mate choice, where individuals select partners based on specific traits that are perceived as attractive or advantageous.
3. Analyze the options provided: Consider which option aligns with the concept of mate choice based on physical traits.
4. Evaluate 'Mate choice based on physical traits': This option directly relates to intersexual selection, as it involves choosing mates based on traits that may indicate genetic fitness or other advantages.
5. Conclude by comparing with other options: Random genetic drift and environmental changes are not directly related to mate choice, and competition among individuals of the same sex is more related to intrasexual selection, not intersexual selection.