BISC120 - Regeneration of Planaria Lab Report

BISC120- - 1 Grace Hwang 11.26.2008 J Ledesma Th 11:00-2:50 Regeneration of Planaria Introduction When one thinks of regenerative medicine the

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1 Grace Hwang 11.26.2008. J. Ledesma Th. 11:00-2:50 Regeneration of Planaria Introduction: When one thinks of regenerative medicine, the possibility of rebuilding damaged tissues in a human body comes to mind. However, organisms such as a starfish, being able to regenerate a lost arm, or some lizards, which can regenerate a tail, perform these profound mechanisms to proliferate lost structures naturally. There are different types of mechanisms of asexual reproduction. There are many invertebrates that reproduce by fission, which is the dividing of the parent into more individuals of relatively the same size. Or they reproduce by budding, which is when new individuals are born from the parent’s body, either remaining attached or detached (Campbell and Reece, 964). However, the type of asexual reproduction mechanism students are going to be focusing on is regeneration. Regeneration begins with the process of fragmentation. Fragmentation is the splitting of the body into many pieces, most developing into full adults. The only way an animal can reproduce this way is if fragmentation is accompanied with regeneration. Regeneration is the rebuilding/regrowth of lost body parts. (Campbell and Reece, 965) In this experiment, students will observe Planaria. Planaria belong to the Phylum Platyhelminthes and are non-parasitic free-living flatworms. Key characteristics of a Planaria are that their head is equipped with a pair of light-sensitive eyespots (Campbell
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This note was uploaded on 07/20/2011 for the course BIO 120 taught by Professor Mcclure during the Spring '06 term at UCLA.

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BISC120- - 1 Grace Hwang 11.26.2008 J Ledesma Th 11:00-2:50 Regeneration of Planaria Introduction When one thinks of regenerative medicine the

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