A model organism is a non-human species that is extensively studied to understand certain biological happenings, which they hope to make discoveries that will provide a better understanding of these special happenings. Model organisms are used to understand genetics, tissues, organs, stem-cells, and much more. Many model organisms are used to hopefully find cures or treatments for certain human or other organism's diseases. Many viruses, , prokaryotes, fungi, plants, protists, and animals are model organisms used for multiple fields of research. This is a picture of a chicken with its chicks, but chickens are one of the very important animal model organisms, since their eggs are studied very closely and are excellent for micro-manipulation (like skin grafting), as well as being great exemplary animals in genetic breading.
Source:
Teaching With Model Organism (n.d.) wormclassroom.org. Retrieved on August 31, 2011, from
http://www.wormclassroom.org/teaching-model-organisms
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