What occurs when egg and sperm fuse? 1 mark Differentiation  Development  Fertilization  Cleavage

Identifying the Process

1. Understanding the Terminology: The question refers to the process that occurs when an egg and sperm fuse. Each option represents a biological process relevant to reproduction and development.

2. Options Explanation:

   • Differentiation: This refers to the process in which cells become specialized in structure and function.
   • Development: This is the overall process by which an organism grows and develops after fertilization.
   • Fertilization: This is the specific process that occurs when the sperm cell successfully penetrates and fuses with the egg cell, resulting in the formation of a zygote.
   • Cleavage: This refers to the series of rapid cell divisions of the fertilized egg following fertilization.

Final Answer

The process that occurs when the egg and sperm fuse is called Fertilization.