Assignment
1) Read pages D-16-21.
2) Define
-Asexual reproduction
-Clone
-Mutation
-Budding
-Sexual reproduction
Fertilization
3) Answer Stopping to Think 1-3 using
complete sentences
4) Answer all of analysis question 1.
Asexual Reproduction
One organism making
exact copies of itself.
Stopping to Think 1
In asexual reproduction of a bacterial cell, is
it clear which cell is the parent and which
is the offspring?
It is not clear which cell is the parent
because they are genetically
identical.
Clone
• Identical offspring of asexual
reproduction.
Clones
Mutation
• A random change that occurs in an
offspring; can cause offspring to have a
different trait from the parent.
(This is not a real
mutation)
Budding
• Process in
which a small
new organism
grows directly
out from the
parent’s body.
Stopping to Think 2
Your friend tells you, “Only single-celled
organisms reproduce asexually. After all,
how could a multicellular organism do
that?” How do you respond to your friend?
Some multicellular organisms can
reproduce asexually through a
process called budding.
Sexual Reproduction
• Reproduction by two parents.
Fertilization
• When a sperm cell and egg cell unite.
Stopping to Think 3
• “Fraternal twins” result when two eggs are both
fertilized by sperm cells, and both develop into
offspring. Why are identical twin much more
similar than fraternal twins?
Identical twins are more similar
because they are formed from one
sperm and one egg instead of two
sperm and two eggs.