Download Meiosis Notes

***MEIOSIS***
NAME______________________________
Period______ Date___________________
<Notes #2- Cell Reproduction>
Mitosis
Meiosis
MITOSIS
MEIOSIS
1. Used to form_________ (somatic) cells
1. Used to form _________ cells (gametes)
2. Divide __________ to make
2. Divide __________ to make
_______ cells
3. End up with...
the __________number
of chromosomes as the parent
_______ cells
3. End up with...
__________ the number
of chromosomes as the parent
_____________________________________- the cells made in mitosis and meiosis.
***MEIOSIS- special cell division in which the cell divides ____________ resulting in
________cells, each with ________ the ____________ number of chromosomes as the
“parent” cell.
Meiosis is used to make _________ cells: “gametes” -- eggs or sperm.
Meiosis means “to diminish or reduce”. The process is sometimes called
“____________________________________” because as the cell divides the chromosome
number is reduced by _________ of the original PARENT cell.
males
females only _________ of the four cells will become an
If meiosis occurs in ______________,
If meiosis occurs in __________, all _______ of the cells will become _____________.
________ (the other cells will disintegrate).
In humans, the egg and sperm each have _______ chromosomes.
When fertilization occurs (the joining of sperm and egg), the __________ number of
chromosomes (______) found in the “parent” cell is restored.
Write the number of chromosomes found in each of the following human cells:
egg
sperm
zygote
(fertilized egg)