Asexual Reproduction

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AsexualReproduction
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What is Reproduction?

• Reproduction is the process in which organisms
  produce more of their own kind.
• Asexual reproduction occurs when a new organism
  is produced by one parent.
• The new organism will be identical to the parent.
  

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Types of Asexual Reproduction

• Parthenogenesis
• Fission
• Vegetative Propagation
• Fragmentation
• Budding

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Parthenogenesis

• A female organism produces an egg that develops
  into a new organism without being fertilized.
• The new organism is an exact copy of her.
• Common examples occur in insects, reptiles and
  fishes.

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Whiptail Lizards

• Parthenogenesis
• A female whiptail lizard may produce eggs that
  develop into identical versions of itself.

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Fission

• A single-celled organism divides into two cells
  of the same size.
• Each is identical to the other

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Bacteria

• Fission
• A single-celled organism that has no nucleus or
  cell wall and reproduces by splitting in two.

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Vegetative Propagation

• New plants can be produced from sections of
  parent plants that are cut off.
• New plants reproduced in this way are identical
  to the parent plant.
• We see this in spider plants and willow trees,
  for example.

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Strawberries

• Vegetative Propagation
• Strawberries reproduce new plants by the division
  of cells from runners or roots.

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Fragmentation

• An organism breaks up into fragments
• Each of these fragments develops into an
  identical copy of the original organism

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Planarians

• Fragmentation
• The body of the parent breaks into pieces, each
  of which can produce an offspring

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Budding

• A bud grows on the body of the parent
• As the bud grows, it forms an identical copy of
  its parent
• Sometimes the bud separates from the parent and
  becomes independent.

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Hydra

• Budding
• Cell division forms a bud that is an identical
  copy of its single parent that separates from the
  parent and becomes independent.