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E.Q What is the difference between sexual and asexual reproduction
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Asexual Reproduction
Organisms such as bacteria and other microorganisms reproduce
asexually. These organisms are single-celled because they reproduce
by dividing in two. Each new organism produced is identical to the
parent cell.
Draw figure 1: Asexual Reproduction of a Bacterial Cell
In asexual reproduction, is it clear which cell is the parent cell? Why or why not?
It is not clear which cell is the parent and which is the
offspring because each cell is identical.
The two identical offspring are both called
organism.
clones of the single parent
When a random change occurs in the original gene, this is called a
mutation.
This change can cause the offspring cell to have a different
trait than its parent.
Sexual Reproduction
sexually. These organisms inherit
traits from two (both) parents. You are not a perfect copy of your
Most animals and plants reproduce
parents.
Sexual reproduction occurs when a tiny sperm
cell produced by a male
unites with an egg cell produced by a female. The union of the egg
and sperm is called fertilization.
This new individual will be
different from each of its biological parents.
exactly the same information.
No two offspring produced by the same parents are identical.
No two sperm or egg cells contain
Explain how identical twins are developed.
Identical twins result when one fertilized egg splits before beginning to
grow and develop—the two eggs then become two genetically identical
offspring or children.
Explain how fraternal twins are developed.
Fraternal twins result when two eggs are both fertilized by sperm cells, and
both develop into offspring. The result is two “non-identical” offspring.
Cloning is the artificial asexual reproduction of organisms. Explain this process here.
The part of the cell that contains the genes (the nucleus) is removed from
one of the cells of the “donor” body. This nucleus is placed into an egg cell
whose nucleus has already been removed. If this artificially fertilized egg
develops in a womb, it grows into offspring that is genetically identical to
the mother that its nucleus cam from.