Because it leads to variations.


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Living organisms, which include humans, animals, plants, algae, fungi and other microorganisms reproduce as a law of nature, a means of ensuring the survival of the species and in the context of evolution. There are two major classifications of reproduction: sexual and asexual reproduction.

Each has its own advantages and disadvantages. Vertebrates, such as humans, exclusively follow sexual reproduction. Many simpler animals such as amoeba follow asexual reproduction.

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Let us have a look at the difference between sexual and asexual reproduction.

Asexual Reproduction

Asexual reproduction spans a variety of methods. The simplest single-celled organisms such as archaea, and bacteria, reproduce by binary fission. In this process, the cells simply divide in half, creating a clone of the parent. This method also holds the benefit of being very quick and energy-efficient. For example, bacteria that reproduce by binary fission can give rise to progeny every few hours. Multiple fission also exists, in which an organism splits into more than one offsprings. Certain species of algae and protozoans exhibit multiple fission


While in multicellular organisms, a similar method called fragmentation is observed. In this process, small pieces break off and grow into new organisms. Another method involves budding, which produces a completely new organism and remains attached to the original body or develops from the original body. A common thread in all this is that the offspring is a direct clone of the parent. The purpose of reproduction, as we’re well aware, is to propagate one’s own genes. Evolutionarily, asexual reproduction is a good bet for the species. It is quick, simple and the genes of the parent will not be diluted by those of another individual. Also, an organism that reproduces asexually can reproduce about twice as fast as one that reproduces sexually.

Sexual Reproduction

Sexual reproduction is the combination of reproductive cells from two individuals to form a third unique offspring. Sexual reproduction produces offspring with a different combination of genes




One must understand that sexual reproduction is a lot more complex than asexual reproduction. It includes the production of gametes, which have half the number of chromosomes compared to all other cells in the organism. They are produced by the process of meiosis, which produces haploid cells from diploid cells. There occurs crossing over and recombination of genes. Switching from chromosomes to chromosomes is a good way to ensure that the genes will remain active in a given population. Besides these, factors like gestation period also play an important role in sexual reproduction. The gestation period is the time required for the foetus to fully develop either internally (like in the mother’s womb) or externally (like an egg).




Difference between Sexual and Asexual Reproduction

The difference between sexual and asexual reproduction are as follows:

Asexual ReproductionSexual ReproductionOccurs in prokaryotic microorganisms and in some eukaryotic unicellular and multicellular organisms, lower invertebrates and plantsOccurs almost in all types of multicellular organisms including humans, animals, and higher plants.It is uniparental.It is usually bi-parental.Gametes are not formed.Gametes are formed.Somatic cells of parents are involved.Germ cells of parents are involved.No fertilization occurs.Fertilization takes place.No involvement of reproductive organs.Presence of fully developed reproductive organs.Only mitosis type of cell division occurs.Both meiosis and mitosis type of cell division occurs.The progeny and the parent are genetically identical.The progenies will be genetically different from the parents.Characteristics of only one parent are inherited.Characteristics of both parents are inherited.The genes and genetic material are just multiplied and passed on to new organisms from the parent.The genetic material undergoes intermixing from both parents to form a new set of genetic material.Multiplication is very rapid and takes less time.Multiplication is not so rapid and takes a longer time to complete.The number of offsprings produced may vary from two to many.The number of offsprings produced is comparatively lower.No evolutionary significance.Has evolutionary significance in the population.Bacterial fission, fragmentation, spore formation, budding of hydra are different types of asexual reproduction.Syngamy, external fertilization, and conjugation are different types of sexual reproduction

Sexual reproduction is better because it causes variations which can make organism fit for surviving in changing environment of ailing planet..