Que 1. What is meant by characteristics?  Ans. It is the detail of appearance or behaviour;...

 Que 1. Why offsprings differ from parents in certain characters? Ans. It is due to biparent...

 Que 1. What is DNA copying? State its importance. Ans. A process where a DNA molecule produ...

Que 1. Explain with reason why giraffe has long neck. Ans. According to Lamarck's theory of u...