asexual sexual - · pdf filesexual reproduction ... protists, and low invertebrates. ... to...
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Asexual
& Sexual Reproduction
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Sex! � Asexual Reproduction
� involves only 1 parent � offspring genetically
identical to parent � involves regular body cells � its quick
� Sexual Reproduction � involves 2 parents � offspring genetic mix of
both parents � involves specialized sex
cells � its slow
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Asexual Reproduction § Type of reproduction in which a
new organism is produced from ONE parent and the offspring is identical to the parent.
§ Occurs in most plants, bacteria, protists, and low invertebrates.
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Asexual Reproduction § One parent § Offspring
are identical to the parents. One Parent
Identical Offspring
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Asexual Reproduction § Advantages and Disadvantages of
Asexual Reproduction § Advantages – Identical to parent,
so will get all good characteristics. § Disadvantages – Identical to parent,
so will also get bad characteristics and is less able to adapt to the environment.
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Asexual Reproduction § Types of Asexual Reproduction
§ Regeneration – organism uses cell division to re-grow body parts. § Example: starfish, salamander
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Asexual Reproduction § Types of Asexual Reproduction
§ Vegetative Propagation – results in a new plant that is genetically identical to the parent plant (a clone). § Examples: strawberry plant, vegetables,
and crops.
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Asexual Reproduction § Types of Asexual Reproduction
§ Budding – organism that produces a bud that breaks away to live on its own. § Example: hydra
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Asexual Reproduction § Types of Asexual Reproduction
§ Binary Fission – used by bacteria, an organism whose cells do not contain a nucleus copy then divide into two identical organisms § Example: bacteria
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Sexual Reproduction § Two parents § Offspring are
a combination of both parents and are therefore different from each parent.
unique / diverse offspring
Two Parents
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Sexual Reproduction § Advantages and Disadvantages of
Asexual Reproduction § Advantages – variety and/or diversity
of offspring (color, shape, size, intelligence, ability, etc.), More able to adapt to environmental changes.
§ Disadvantages – uniqueness, sometimes traits needed for survival are not passed on.
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Sexual Reproduction § Types of Sexual Reproduction
§ Plants – when the reproductive cells of one plant fertilize (pollinate) the reproductive cells of another plant. This produces seeds that can grow into a new plant.
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Sexual Reproduction § Types of Sexual Reproduction.
§ Animals – when the reproductive cells of one animal fertilize the reproductive cells of another animal. This produces a baby (embryo).