In evolutionary biology, what term denotes reproductive success?

In evolutionary biology, what term denotes reproductive success?

• A. Embryology
• B. Fitness
• C. Homology
• D. Analogy

Answer: (B)

Reproductive success is captured by the term fitness. In evolutionary biology, fitness refers to how well an individual’s genetic material is represented in the next generation. It’s about the relative contribution of an organism’s genes to future generations, typically measured by the number of offspring that survive to reproduce, or more broadly by the organism’s overall ability to pass on viable genes. Natural selection favors traits that increase fitness, shaping adaptation over time. Embryology is the study of an organism’s development from fertilization onward. Homology describes similarity between traits because of shared ancestry. Analogy refers to similarity due to convergent evolution or similar function, not shared origin. These terms describe different concepts from development or comparative biology, not reproductive success.

Reproductive success is captured by the term fitness. In evolutionary biology, fitness refers to how well an individual’s genetic material is represented in the next generation. It’s about the relative contribution of an organism’s genes to future generations, typically measured by the number of offspring that survive to reproduce, or more broadly by the organism’s overall ability to pass on viable genes. Natural selection favors traits that increase fitness, shaping adaptation over time.

Embryology is the study of an organism’s development from fertilization onward. Homology describes similarity between traits because of shared ancestry. Analogy refers to similarity due to convergent evolution or similar function, not shared origin. These terms describe different concepts from development or comparative biology, not reproductive success.