AP BIOLOGY

Detailed explanation-1: -Variations in species help them to adapt themselves to that particular environment and give them a chance of survival. For example, thermophilic bacteria are variants that are resistant to extreme temperature. They have a chance of survival in high temperate zones while others die.

Detailed explanation-2: -Variations are essential for natural selection. Variations in a species of an organism helps to adapt in the environment, it also prevents the extinction of a species.

Detailed explanation-3: -A genetically diverse population of individuals is more likely to survive than a population of individuals with similar genetic makeup. Variation allows some individuals within a population to adapt to the changing environment and natural selection allows the expression of those beneficial traits to persist.

Detailed explanation-4: -It helps a species to survive, it also helps us to determine who is who, it helps organisms to adapt to their environment as well as to changes which do occur in the environment, however it also helps a species to emerge strong if favoured by natural selection.

Detailed explanation-5: -Advantages:Due to Variation, organism can be developed to survive in adverse conditions, more resistant to diseases, also it creates diversity. Disadvantages: It can also cause some undesired effects like genetic disorder, diseases, etc.