fertilization
Post on 21-Jan-2016
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Fertilization
Topics:Sexual reproduction
FertilizationGenetic diversity
Cloning (bonus)
Lots of organisms don’t need partners to make a baby. Known as asexual reproduction Examples: Cloning, dividing perennial plants
and bacteria reproduction.
What Sexual Reproduction is…
It is a way to increase genetic diversity
A process that requires fertilization
Fertilization
The fusion of two halpoid gametes to form a new organism (baby)
The new organism is a zygote In humans
fertilization occurs when the sperm fuses with the egg inside the female
Fertilization can also happen outside the body or inside male bodies.
Outside: many fish, frogs etc In the male: sea horses
Genetic Diversity
Characteristic of a gene pool Gene pool is the genes available within a
reproducing group of individuals More diversity means that there are many
different versions of otherwise similar organisms.
Examples: high genetic diversity at an Olympic stadium, low genetic diversity at a KKK meeting
Non human examples: potato famine, pine beetle outbreak, cheetahs
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