6.1 Asexual and Sexual Reproduction

What is asexual reproduction?

• is a type of reproduction in which two cells, usually an egg and a sperm, join to form a zygote, which develops into a new organism with its own genetic identity

• is a type of reproduction in which a new organism is produced from one parent and has the same DNA as the parent

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NGSS.MS-LS3-2

What are the advantages of asexual reproduction?

• Can increase populations rapidly

• lack of diversity and the offspring looks the same as the parent.

• Does not require a mate for reproduction to take place

• It is complicated

What is a disadvantage of asexual reproduction?

• Lack of diversity the offspring has the same genes as the parent.

• Can increase populations rapidly

• Does not require a mate for reproduction to take place

• It's safer -organisms are not vulnerable whilst mating takes place.

What is Binary Fission?

• develops an outgrowth which is detached from the parent and becomes a new individual.

• the organism produce its own spores. These spores are genetically identical to the parent

• during this type of reproduction the organism divides in half

• Organisms can be produced from unfertilized eggs

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NGSS.MS-LS3-2

What is budding?

• the organism produce its own spores. These spores are genetically identical to the parent

• only one parent provides DNA for the new organism, which would make the new organism or offspring genetically identical to its one parent.

• A new organism is created from the roots, stems or leaves.

• develops an outgrowth which is detached from the parent and becomes a new individual.

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NGSS.MS-LS3-2

What is Cloning?

• develops an outgrowth which is detached from the parent and becomes a new individual.

• Organisms can be produced from unfertilized eggs.

• during this type of reproduction the organism divides in half

• only one parent provides DNA for the new organism, which would make the new organism or offspring genetically identical to its one parent.

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NGSS.MS-LS3-2

What is Vegetative Propagation?

• the organism produce its own spores. These spores are genetically identical to the parent

• only one parent provides DNA for the new organism, which would make the new organism or offspring genetically identical to its one parent.

• A new organism is created from the roots, stems or leaves.

• develops an outgrowth which is detached from the parent and becomes a new individual.

When a starfish grows a new body off a broken arm, what kind of reproduction is this?

• Sexual
• Differentiation
• Asexual 
• Specialization

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NGSS.MS-LS3-2

Where does an off spring get its traits in asexual reproduction?

• From both parents
• From only one parent
• From neither parent
• There are no traits handed down

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NGSS.MS-LS3-2

What percentage of chromosomes are handed down by a sperm cell?

• 75%
• 25%
• 50%
• 100%

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