Zoology - Evolution Question with Solution | TestHub

Fitness is the end result of the ability to adapt and get selected by nature. In an organism, the so-called fitness depends upon the inherited characteristics, so there must be a genetic basis for getting selected and to evolve. We can say that some organisms in a population are better adapted to survive in an hostile environment. Adaptive ability is inherited and have a genetic basis. 2 key concepts of Darwinian Theory of Evolution :$1.$Branching descent$2.$Natural selection