Fertilisation - Fertilisation in Animals

Fertilisation in Animals

The mechanics behind fertilisation has been studied extensively in sea urchins and mice. This research addresses the question of how the sperm and the appropriate egg find each other and the question of how only one sperm gets into the egg and delivers its contents. There are three steps to fertilisation that ensure species-specificity:

  1. Chemotaxis
  2. Sperm activation/acrosomal reaction
  3. Sperm/egg adhesion

Read more about this topic:  Fertilisation

Famous quotes containing the word animals:

    “The greatness of man is so evident that it is even proved by his wretchedness. For what in animals is nature, we call in man wretchedness—by which we recognize that, his nature being now like that of animals, he has fallen from a better nature which once was his.”
    —Blaise Pascal (1623–1662)