ANATOMY

Detailed explanation-1: -The term “fitness” in evolutionary biology means the ability of an organism to pass on its genetic material to its offspring. Biological or “Darwinian” fitness is being able to live long enough to reproduce and keep the population or species alive.

Detailed explanation-2: -Individuals with adaptive traits-traits that give them some advantage-are more likely to survive and reproduce. These individuals then pass the adaptive traits on to their offspring.

Detailed explanation-3: -The inherited trait that allows an individual to survive and reproduce is called an adaptation. Some of these variations in traits between individuals may be advantageous while others may not be; the environment in which the population lives is a major determinant of advantage or disadvantage.

Detailed explanation-4: -Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.

Detailed explanation-5: -According to Charles Darwin’s theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.