Question

To determine the degree of fitness in evolutionary selection, which measuring stick can be used?

• A. The increase in lifespan resulting from selection
• B. The increase in chromosomal number within the nucleus
• C. Reproductive success
• D. The number of available alleles for any one gene
• E. The increase in geographical territory for any species

Answer 1

The correct option is C Reproductive success

Evolutionary fitness refers to the possession of characters that impart survival and reproductive advantage to individual over others. Reproductive success ensures production of fertile offspring by interbreeding thereby maintains species continuity while adding genetic diversity to gene pool through interbreeding. Thus, the correct answer is option C.