Asexual vs' Sexual Reproduction

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Asexual vs. Sexual Reproduction
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REPRODUCTION

• All living things reproduce. Reproduction may be
  SEXUAL or ASEXUAL.

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ASEXUAL REPRODUCTION

• In asexual reproduction, a single organism gives
  rise to offspring with identical genetic
  information.
• Asexual reproduction one parent.
• All of the cells in the human body reproduce
  asexually EXCEPT for those found in the female
  ovaries and the male testes.

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SEXUAL REPRODUCTION

• In sexual reproduction, genetic information from
  two cells combines to produce a new organism.
• Usually, two specialized sex cells unite in
  sexual reproduction and they form a fertilized
  egg called a ZYGOTE.
• There are some organisms that use BOTH methods of
  reproduction. Examples include bacteria most
  plants.

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SEXUAL REPRODUCTION
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TYPES OF ASEXUAL REPRODUCTION

• MITOSIS
• Mother cell splits into 2 daughter cells.

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BINARY FISSION

• An organism simply splits into equal sized
  offspring.
• Prokaryotes, Bacteria
• Fast and easy
• - Everybody has the same DNA

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FRAGMENTATION

• A new organism forms from a part that breaks off
  from the parent.
• Fungi sea stars
• Easy
• - Parent broken, same DNA

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FRAGMENTATION
Moss
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BUDDING

• The offspring begins as a small outgrowth from
  the parent and eventually breaks off.
• Yeast hydras
• Fast, somewhat easy
• - Same DNA

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SPORE FORMATION

• Frequent cell division produces many smaller
  cells called spores that often have a tough
  coating that protects them.

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VEGETATIVE REPRODUCTION

• The parent produces runners that can develop
  into mature organisms with identical genetic
  information.

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TRY THIS ACTIVITY

• How many divisions will it take? (page 160).

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VIDEO CLIPS

• http//www.youtube.com/watch?vK0ZP8VtxUZ0
  (Binary Fission)
• http//www.youtube.com/watch?vl7JYvXPRPlE
  (Binary Fission)
• http//www.youtube.com/watch?vVlN7K1-9QB0
  (Mitosis)
• http//www.youtube.com/watch?vm73i1Zk8EA0feature
  related (Mitosis in Real Time)
• http//www.youtube.com/watch?vdcNEfUnEt_g
  (Budding)