Final answer:
Fitness is a measure of an organism's ability to survive and reproduce. It is influenced by factors such as beneficial alleles, successful reproduction, and sexual reproduction. Fitness plays a crucial role in the overall success of a genotype.
Step-by-step explanation:
The relative reproductive success of a genotype is known as fitness. Fitness is a measure of an organism's ability to survive and produce fertile offspring. In the context of evolution by natural selection, individuals with higher fitness are more likely to pass on their genes to future generations.
Fitness is influenced by various factors, including the frequency of beneficial alleles in a population, successful reproduction, and the selection of alleles that confer beneficial traits. Sexual reproduction also plays a role in fitness by generating offspring with diverse phenotypes that may enhance survival in a changing environment.
In summary, fitness is a key concept in biology that describes an organism's relative ability to survive and reproduce, contributing to the overall success of a genotype.