Reproduction is a marvelous culmination of individual transcendence. Individual organisms come and go, but, to a certain extent, organisms "transcend" time by reproducing offspring. Let's take a look at reproduction in animals.
What Is Reproduction?:
In a nutshell, reproduction is the creation of a new individual or individuals from previously existing individuals. In animals, this can occur in two primary ways: through asexual reproduction and through sexual reproduction. Let's look at asexual reproduction.
In asexual reproduction, one individual produces offspring that are genetically identical to itself. These offspring are produced by mitosis. There are many invertebrates, including sea stars and sea anemones for example, that produce by asexual reproduction. Common forms of asexual reproduction include:
In this form of asexual reproduction, an offspring grows out of the body of the parent.
Hydras exhibit this type of reproduction.
Gemmules (Internal Buds)
In this form of asexual reproduction, a parent releases a specialized mass of cells that can develop into offspring.
Sponges exhibit this type of reproduction.
In this type of reproduction, the body of the parent breaks into distinct pieces, each of which can produce an offspring.
Planarians exhibit this type of reproduction.
In regeneration, if a piece of a parent is detached, it can grow and develop into a completely new individual.
Echinoderms exhibit this type of reproduction.
This type of reproduction involves the development of an egg that has not been fertilized into an individual.
Animals like most kinds of wasps, bees, and ants that have no sex chromosomes reproduce by this process. Some reptiles and fish are also capable of reproducing in this manner.