Asexual Reproduction | Assignment

9 Pages2704 Words725 Views

Added on 2019-10-01

Asexual Reproduction | Assignment

Added on 2019-10-01

BookmarkRelated Documents

Running Head: Blog WritingBlog Writing

2Blog WritingAsexual Reproduction18th July 2019Asexual Reproduction-MeaningAsexual reproduction is one of the reproduction types where the offspring isdeveloped from a single organism inheriting the genes of the parent organisms. Reproductionmeans producing a new individual organism from parents. Reproduction is one of theessential processes which leads to continuity of species and life on the earth. There are twoprocesses of reproduction such as sexual and asexual reproduction. In the case of sexualreproduction, both male and female organisms or individuals give rise to their offspring ornew individual organism. But in the case of asexual reproduction, simple division ofindividual organism takes place with the involvement of any one of the parents. There arevarious forms of asexual reproduction such as fission, vegetative propagation, budding,fragmentation, spore formation, tissue culture or micro-propagation. In asexual reproduction,the fusion of gametes does not take place. The chromosome numbers do not change in thecase of asexual reproduction. It is one of the primary reproduction forms for single-celledorganisms like bacteria and archaea. Many fungi and plants sometimes reproduce asexually.In a very early age, some of the sexual cells are found to die. Prokaryotes reproduce asexuallywhere the fusion of gametes does not take place. Transfer of lateral gene takes place by thesupport of the mechanisms like conjugation, transduction, and transformation which giveresult in genetic recombination connected with sexual reproduction. A complete absence of sexual reproduction is quite rare among the multi-cellularorganisms. The multi-cellular organisms such as animals reproduce with the help of sexual

3Blog Writingreproduction. From certain hypotheses, it has been revealed that there are certain short-termbenefits of asexual reproduction concerning rapid growth in the population or stability in theenvironment. On the other hand, asexual reproduction has some advantages because it allowsgenetic diversity to get generated more rapidly which in turn allows increased adaptation tovarious changing environments. There are certain constraints or barriers to switching toasexual reproduction from sexual reproduction. Some of the barriers or constraints includeloss of protective recombinational repair to the damage of DNA or concomitant loss ofmeiosis. There are certain types of a sexual reproduction such as fission, budding, vegetativepropagation, spore formation, fragmentation, and agamogenesis which is again categorizedinto two other types such as parthenogenesis and nuclear embryony and apomixes.Different forms of Asexual ReproductionGenetic materials are needed for sexual reproduction. The genetic materials which the parentorganisms use to create their offspring are found in case of sexual reproduction. But in thecase of asexual reproduction, a single organism can reproduce without the support of geneticinput of another organism of the opposite gender. A single organism is capable enough toproduce asexually. Single-celled organisms and living things are capable of asexualreproduction but it takes different forms. There are many single-celled organisms whichdepend on binary fission which is a type of asexual reproduction. Bacteria reproduceasexually by binary fission. There are certain species of worms or annelids which alsoreproduce asexually and the process is known as fragmentation. The species of annelidsinclude mud mud-worms or California black worms. These species are hermaphroditic whichmeans they have both female and male reproductive parts that help them to reproduceasexually. Black-worms generally reproduce by using fragmentation process where the blackworms are capable of breaking apart and a new worm gets generated from an individual

End of preview

Want to access all the pages? Upload your documents or become a member.

Study On Prokaryotes - Bacteria & Archaea

|432

|311

Biological Significance of Meiosis and Inheritance Patterns

|11

|1444

|350

Asexual Reproduction | Assignment