What are fertilization? What are the disadvantages of fertilization?

Fertilization is a process of fusion of male and female gamete to produce a zygote.

Disadvantages of fertilization are as follows:

• 1. Fertilization is a time consuming and complex process.
• 2. Pure line is not maintained as the gametes combine to give new sets of characters.
• 3. Gametes are produced in large amounts.
• 4. The post fertilization development also takes longer time.