Reproduction Science Essay

2168 WordsMay 18, 20119 Pages
Asexual Reproduction Asexual reproduction is the form of reproduction where the offspring produced are clones of the single parent organism. There is no exchange of genetic material, nor is there any fertilization—and this form of reproduction can be carried out in various methods, and some of these are outlined below. Fragmentation Reproductive fragmentation is a form of asexual reproduction and is when an organism physically splits up into smaller fragments (hence, the name “fragmentation”). Fragmentation can be either intentional or unintentional—and the fragments that are split from the original organism can develop into mature clones of the single parent. Also, fragmentation is essentially caused by mitosis. Meiosis is not involved in fragmentation, as this is asexual reproduction. An example of the occurrence of reproductive fragmentation is in starfish—and, many a time, when the “leg” of a starfish is sliced away from the body, it will develop into an identical clone of the original starfish, and the other segment will also do the same. Budding Budding is another form of asexual reproduction where the offspring of the original organism grows on it, and does not detach until the offspring has reached a certain level of maturity. The organism produced is a clone of the original and an example of budding is in unicellular yeast or sponges. Binary Fission Binary fission is a form of asexual reproduction which is carried out by all prokaryotes as well as some protozoa and eukaryotes. The process includes the DNA splitting into two separate strands and then duplicating. This means that there will be two copies of the original DNA and when this is completed the plasma membrane will grow inwards, resulting in the original organism splitting up into two. These organisms are genetically identical to the original one and this process is found especially in

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