types of reproduction asexual sexual. purpose of reproduction to make sure a species can continue....
TRANSCRIPT
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Types of Reproduction
Asexual
Sexual
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Purpose of Reproduction
• To make sure a species can continue.– Definition: Reproduction is the process by
which an organism produces others of its same kind.
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Asexual Reproduction
• A new organism (sometimes more than one) is produced from one organism.
• The offspring will have hereditary material uniform with the hereditary material of the parent organism. This means they will be genetically alike.
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Types of Asexual Reproduction
• Budding
• Regeneration
• Fission (Binary fission)
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Budding
• Process by which a new, duplicate plant or animal begins to form at the side of the parent and enlarges until an individual is created.
• Very common in plants;
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http://www.waycross.edu/faculty/bmajdi/hydra%20budding.jpg
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http://judyepstein.com/images/DesertImages/Budding-Purple-LG.jpg
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Regeneration
• The ability to restore lost or damaged tissues, organs or limbs.
• It is a common feature in invertebrates, like worms and starfish.
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http://www.vsf.cape.com/~jdale/science/starfishregenerating.jpg
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http://classes.design.ucla.edu/Spring05/152BC/projects/saito/ex3/planaria.jpg
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Fission
• Also called binary fission.
• Becoming two by division of the complete organism.
• A type of cell division.
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http://wappingersschools.org/RCK/staff/teacherhp/johnson/visualvocab/BinaryFissionParamecium.jpg
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http://coris.noaa.gov/glossary/binary_fission_186.jpg
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Sexual Reproduction
• Requires two sex cells – egg and sperm
• The egg and sperm join to form an entirely new organism– Different from the parent organism
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IMPORTANT!
• Asexual reproduction results in offspring that are genetically identical to the parent organism
• Sexual reproduction results in offspring that are genetically different from the parent organisms