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From an evolutionary perspective reproduction is the overall motivationin the decisions made by animals Reproduction is defined as The HYPERLINK httpwwwbiology-onlineorgdictionaryProduction oProduction production of offspring by organised HYPERLINKhttpwwwbiology-onlineorgdictionaryBodies o Bodies bodies and sexual reproduction phimixis is defined as A HYPERLINKhttpwwwbiology-onlineorgdictionaryMode o Mode mode of HYPERLINK httpwwwbiology-onlineorgdictionaryReproduction oReproduction reproduction involving the HYPERLINKhttpwwwbiology-onlineorgdictionaryFusion o Fusion fusion of HYPERLINKhttpwwwbiology-onlineorgbodictindexphptitleFemalegameteactionedit o Female gamete female gamete HYPERLINKhttpwwwbiology-onlineorgdictionaryOvum o Ovum ovum and HYPERLINKhttpwwwbiology-onlineorgbodictindexphptitleMalegameteactionedit o Male gamete male gamete HYPERLINKhttpwwwbiology-onlineorgdictionarySpermatozoon oSpermatozoon spermatozoon which forms a HYPERLINKhttpwwwbiology-onlineorgdictionaryZygote o Zygote zygote that potentially develops into genetically HYPERLINKhttpwwwbiology-onlineorgbodictindexphptitleDistinctactionedit o Distinct distinct HYPERLINKhttpwwwbiology-onlineorgdictionaryOffspring o Offspring offspring Biology-Online org 2010 Sexual reproduction involvesmeiosis and syngamy both of which are processes which take place duringthe formation of a zygote Sexual reproduction is predominantly used bymost species especially plant and animal instead of asexualreproduction apomixis Sex itself is not reproduction but instead isa device used for mixing genes Barnard Chris 2004 Sexualreproduction offers several advantages to the organisms that partake init that asexual reproduction does not However sexual reproductioncomes at a cost that asexual reproduction does not The costs andbenefits of sexual reproduction compared to asexual reproduction will beexamined in this essay The most intriguing question when looking at the evolution of sexualreproduction is why it has evolved to exist in the first place when thecompetent method of asexually reproducing already existed Asexualreproduction is seen as more efficient and inexpensive thansexual reproduction as it doesnt require the resources sexualreproduction or as much energy Crow James F 1994 Resources andenergy also have to be put into actually find an appropriate mate toreproduce with There is also the risk of catching a sexuallytransmitted disease when sexually reproducing Finding a member of theopposite sex to mate with can be difficult
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