Sexual and Asexual Reproduction

• The process of sexual reproduction occurs by the formation of gametes with a haploid set of chromosomes.
• During the process of fertilization, these two gametes combine or fuse to form a cell with a diploid set of chromosomes.
• Sexual reproduction is common in higher organisms like multicellular animals, some fungi, and plants.
• It is absent in prokaryotes without nuclei but the process of bacterial conjugation, transformation, and transduction are similar in process to sexual reproduction.
• Sexual reproduction is characterized by the fertilization of a female gamete by a male gamete to form an offspring that is genetically different from both the parents.
• Sexual reproduction is a bi-parental process which requires two different individuals of different sex.
• The process of sexual reproduction is more complicated than asexual reproduction and has specialized parts and cells involved in the process.
• The formation of gametes with half the number of chromosomes is an important aspect of sexual reproduction.
• Reproductive cells during sexual reproduction undergo meiotic division where a diploid cell divides to form four haploid cells. These haploid cells are gametes. The male gametes are mostly motile, whereas the female gamete is immobile.

• Asexual reproduction in living beings is characterized by the absence of male and female gametes and the lack of change in the number of chromosomes in the offspring.
• As no specific gametes are formed during asexual reproduction, the somatic cells act as gametes.
• The body of the organism undergoing asexual reproduction often does not have defined reproductive organs.
• Asexual reproduction is considered a more primitive mode of reproduction as it mostly occurs in primitive living beings like bacteria and fungi.
• This results in offsprings that are genetically identical to the parents and each other. These are also called clones.
• During asexual reproduction, mitosis occurs where the genetic material in the parent cell is doubled before dividing it into two equal halves.
• The absence of meiosis or genetic exchange results in a lack of diversity among the individuals of a group.
• The lack of diversity makes individuals susceptible to similar environmental and physical conditions.
• The process of asexual reproduction is rapid, which is useful for organisms whose strategy to survive is to reproduce rapidly.
• Asexual reproduction is a uni-parental process that can occur within a single organism, and thus no mates are required for the process.