Download 5.4 Asexual Reproduction

5.4 Asexual Reproduction
KEY CONCEPT
Many organisms reproduce by cell division.
5.4 Asexual Reproduction
• I can compare and contrast binary fission and mitosis.
• I can describe how some eukaryotes reproduce through
mitosis.
5.4 Asexual Reproduction
Binary fission is similar in function to mitosis.
• Asexual reproduction is the creation of offspring from a
single parent.
– Binary fission produces two daughter cells genetically
identical to the parent cell.
parent cell
– Binary fission occurs in
prokaryotes.
DNA
duplicates
cell begins
to divide
daughter
cells
5.4 Asexual Reproduction
• Environment determines what form of reproduction is most
advantageous.
– Asexual reproduction is
an advantage in
consistently favorable
conditions.
– Sexual reproduction is
an advantage in
changing conditions.
5.4 Asexual Reproduction
Some eukaryotes reproduce through mitosis.
• Budding forms a new organism from a small projection
growing on the surface of the parent.
Hydra
bud
Yeast
5.4 Asexual Reproduction
• Fragmentation is the splitting
of the parent into pieces that
each grow into a new
organism.
• Vegetative reproduction
forms a new plant from the
modification of a stem or
underground structure on
the parent plant.
5.4 Asexual Reproduction
The most common form of reproduction among prokaryotes
is
• a. sexual reproduction.
• b. binary fission.
• c. budding.
• d. fragmentation.
5.4 Asexual Reproduction
What is the main difference between binary fission and
mitosis?
• a. There is no DNA replication in binary fission.
• b. Two parents are required for mitotic reproduction.
• c. Binary fission occurs in single-celled organisms only.
• d. Mitosis takes place only in sexual reproduction.
5.4 Asexual Reproduction
Which of the following statements is true of asexual
reproduction?
• a. It produces few offspring.
• b. It produces genetically identical offspring.
• c. It produces genetic diversity.
• d. It produces offspring that are resistant to antibiotics.
•
5.4 Asexual Reproduction
Starfish that reproduce by splitting into pieces are
reproducing by
• a. binary fission.
• b. vegetative reproduction.
• c. budding.
• d. fragmentation.
5.4 Asexual Reproduction
Vegetative reproduction, budding, and fragmentation are
examples of
• a. asexual mitotic reproduction.
• b. reproduction through binary fission.
• c. prokaryotic colony formation.
• d. increased genetic variation.