BB: Asexual vs. Sexual Reproduction Please copy this chart in your notebook

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BB Asexual vs. Sexual ReproductionPlease copy
this chart in your notebook use the WHOLE page.
Name Type (asexual or sexual) What happens? Organisms that use this type Positives - Negatives
1. Binary Fission
2. Bacterial Conjugation
3. Fragmentation
4. Budding
5. Pollination
6. Sexual Reproduction
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Asexual vs. Sexual Reproduction
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Asexual reproduction

• A form of reproduction which does not involve
  meiosis or fertilization.
• Asexual reproduction one parent.
• The primary form of reproduction for
  single-celled organisms such as archaea,
  bacteria, and protists.
• Many plants and fungi reproduce mostly asexually
  as well.

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Sexual Reproduction

• Results in increasing genetic diversity of the
  offspring.
• Characterized by two processes
• meiosis, halving of the number of chromosomes
• fertilization, combination of two gametes and the
  restoration of the original number of chromosomes
• During meiosis, chromosomes usually cross over
  genetic recombination.
• Primary method of reproduction for the vast
  majority of visible organisms, including almost
  all animals and plants.

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Binary Fission

• Asexual
• Cell splits and replicated DNA goes with each
  part
• Prokaryotes, Bacteria
• Fast and easy
• - Everybody has the same DNA

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Bacterial Conjugation

• Asexual, Sexual
• A bacteria shoots out a tube and sends a piece of
  its DNA to another bacteria
• Bacteria
• Mixes DNA
• - Parent loses a little piece of DNA

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Fragmentation/ regeneration

• Asexual
• Body of parent breaks and produces offspring
• Fungi, moss, sea stars, planarian
• Easy
• - Parent broken, same DNA

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Fragmentation/ regeneration
Moss
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Budding

• Asexual
• Offspring grows out of parent
• Yeast, hydras
• Fast, somewhat easy
• - Same DNA

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Pollination

• Sexual
• Pollen is delivered to female part of plant
• Flowering plants
• Plants dont have to move, mixes DNA
• - Need external source for pollination to take
  place wind, bee, bat, butterfly etc.

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Pollination
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Sexual Reproduction

• Sexual
• DNA from 2 individuals merge to form one
• Animals, Plants
• Diverse DNA
• - Takes a long time, 2 individuals needed

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Sexual Reproduction
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Numbers! (20 minutes or 1 year, 8 months)
Core Bacteria (Binary Fission) Hydra (Budding) Planaria, Starfish (Fragmentation) Rabbits, Kittens, Humans (Sexual Reproduction) Dandelions, Pine trees (Pollination)
1 12,731 (6) 504 (6) 2640 (5) 20,10,2 (2) 46, 3 (3)
2 23,313 (7) 610 (4) 3626 (6) 20,10,2 (4) 20, 2 (4)
3 20,697 (10) 450 (6) 2578 (8) 20, 10, 2 (3) 21, 1.5 (4)
4 22,994 (10) 613 (6) 2982 (5) 20, 10, 1.5 (4) 20, 1.5 (4)