Class XII Science Biology Extra Questions
Class 12th Biology NCERT Based Questions
12th Biology Science Session 2022-23
12th Biology Terminal Exam Based Extra Questions
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
Share
Creation and variation occur in a sexually reproducing population as a result of crossing over during meiosis and random fusion of gametes. It is however the organisms that are selected over a period of time which are determined by the environmental conditions. In other words, the environment provides the direction with respect to adaptations so that the organisms are more and more fit in terms of survival.