The process by which one organism or species produces others of its same kind.
There are 2 types of reproduction:
Asexual : A new
organism is produced from 1 organism.
Sexual : A new organism is produced from 2 organisms.
New organisms are produced from one parent
The new organism contains genetic information identical to or uniform with the parent.
There is less genetic
diversity (as compared to sexual reproduction)
Propagation & Sprouting:
Vegetation that grows a plant from a cutting, graft or seed.
Ex: Strawberries growing from runners
Ex: A potato that sprouts outwardly and grows into a new potato
TEXTBOOK-Figures 7.A and 7.B on page 359
Offspring grows off the side of the parent and eventually breaks away when fully formed.
Ex: Hydra, a simple freshwater organism
TEXTBOOK, pg. 360
Organisms that don’t have a nucleus copy their genetic information and divide into 2 identical organisms.
EX: Bacteria (prokaryotic) has no true nucleus
Process in which cell division creates more spores.
Spores are reproductive bodies, that are produced by mushrooms, plants, bacteria, and Protozoa and that are widely dispersed.
Ex: Fungi (mushrooms) and the spores on the underside of fern plants.
Process that uses cell division to re-grow damaged or lost body parts.
Ex: Sponges, sea stars and planarians
Cells go through a process called mitosis to divide.
The trillions of cells in the body carry the same genetic information.
Specific cells use certain pieces of the information to become particular types of cells.
Ex: liver cells that work together to become the liver organ vs. skins cells that work together to become skin.
Cell division allows for growth and healing of an organism
Ex: when your skin is cut/wounded ,cell division causes re-growth of those skin cells. Also, individuals experiencing puberty are going through rapid growth caused by cell division.
WHAT IS IT?
Divisions of the nucleus (cell division)
Produces two nuclei that are identical to each other and the original nucleus
Every cell in the body except sex chromosomes has 23 pairs of chromosomes for a total of 46 chromosomes in the nucleus.
THE CELL CYCLE: PHASES OF MITOSIS ACTIVITY DIRECTIONS: Use pg. 356-
357 in your textbook and the handout (Pg. 25) to label the steps of mitosis. Next to each phase, briefly explain what happens (at least 2 complete sentences for each phase.)
PHASES Interphase: Most eukaryotic
( cells with a nucleus) cells spend most of their time here growing and developing. The cell’s information is copied here as it prepares to divide.
Prophase Metaphase Anaphase Telophase
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