Write the significance of variations.

Explanation

Significnace of variations. 1. They constitute the raw meterial for evolution, 2. They help the organsing to adapt themselves according to the changing environment. 3. Variations make some organism better fitted in the struggle for existence. 4. Discontinuous variations produce new traits in the organisms. 5. Variations give each organism a distinct individuality. 6. Variations allow breeders to improve races of useful plants and animals for increased resistance, better yield, quicker growth and lesser input. Because of variations, species do not remain static. Instead, they are slowly getting modified forming new species with time. 8. Pre-adaptations caused by the presence of neutral variations are extremely useful for survival against sudden changes in environment, e.g., resistance against a new pesticide or antibiotic.