Asexual Reproduction

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Asexual Reproduction

• Asexual reproduction is a method of reproduction
  with all the genetic information coming from one
  parent.

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Asexual Reproduction

• Asexual reproduction is the formation of new
  individuals from the cell(s) of a single parent.
• HAPPENS BY MITOSIS ONLY
• It is very common in plants less so in nimals

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• Did I tell you asexual reproduction only involves
  MITOSIS???

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Asexual reproduction is sometimes called
cloning.   Cloning is the production
of identical genetic copies.   All forms of
asexual reproduction are variations of the cell
division process of mitosis. Mitosis is
associated with asexual reproduction,  as well as
growth and repair in sexually reproducing
organisms. Mitosis
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Types/Methods of Asexual Reproduction

• 1.  binary fission -- involves an equal division
  of both the organism cytoplasm and nucleus to
  form two identical organisms -- the diagram of
  the protist at the right is example of this
• Bacteria

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Budding

•  Here, offspring develop as a growth on the body
  of the parent. -- the diagram of a yeast at the
  right is an example of this

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Sporulation

•   sporulation (spore formation) -- is
  reproduction involving specialized single cells
  coming from one parent
• Ex., mold spores

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Bread Mold
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Sporulation
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Vegetative propagation in Plants

• A plant body part/organ can be used for to make
  the whole plant.
• Like a stem

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Stems

• In some species, stems arch over and take root at
  their tips, forming new plants.
• The horizontal above-ground stems (called
  stolons) of the strawberry (shown here) produce
  new daughter plants at alternate nodes.

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• Other part is
• Leaves

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Leaves

• This photo shows the leaves of the common
  ornamental plant Bryophyllum (also called
  Kalanchoë) . Mitosis at meristems along the leaf
  margins produce tiny plantlets that fall off and
  can take up an independent existence.

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Roots

• Some plants use their roots for asexual
  reproduction.
• The dandelion is a common example. Trees, such as
  the poplar or aspen, send up new stems from their
  roots.
• In time, an entire grove of trees may form all
  part of a clone of the original tree

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CLONE
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REGENERATION

• Where you can grow a body part or a whole new
  organism

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List methods of Asexual reproduction
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Why is it that while star fish can regenerate
its arms, but human can not?