Chapter 42.2, Problem 3R

Summary Introduction

To review:

The mechanisms involved in ensuring fertilization of the egg by the sperm of the same species in the spawning animals.

Introduction:

The sexual reproduction in animals consists of three main steps—male and female gametes formation, mating or spawning in order to bring together the two gametes, and fusion of the two gametes (fertilization) to give rise to a new individual. Spawning refers to the release of eggs or sperms in the environment by the animals showing external fertilization such as all aquatic animals spawn in large number inside water.