Name ____________________________________
Mrs. Geithner-Marron Bio 200
Date __________
Period _________
Unit 7: Cellular Reproduction
Ch. 22: Cell Reproduction
22:1 Mitosis & 22:2 Meiosis
Diploid = 2n
Diploid = 2n
Formation
of sex cells
(gametes)
Body
(somatic)
cells
divide
2n
Meiosis 1
n
n
haploid = n
Meiosis 2
2n
2n
n
n
haploid = n
n
n
2 Types of Cell Reproduction
Mitosis
Meiosis
•
Occurs in:
•
Occurs in:
•
Cell divides:
– Results in:
• _______________ cells
•
Cell divides:
– Results in:
• _______________ cells
–
with __________ # of
–
chromosomes (as parent cell)
»
–
chromosomes (as parent cell)
________ (humans)
Function:
•
_____________
•
_____________
with __________ # of
»
–
________ (humans)
Function:
•
_________________
–
_______________
Name ____________________________________
Mrs. Geithner-Marron Bio 200
Date __________
Period _________
Diploid & Haploid Cells
•
____________________cell  cell that contains two of each chromosome (& thus 2 sets of
genes… 1 from each parent)
–
Represented by ________________
•
–
•
ex. humans  _______________
Ex. __________________________
_________________cell  cell that contains one of each chromosome (& thus 1 set of genes)
–
Represented by ________________
•
–
ex. humans  _______________
Ex. __________________________
Mitosis (Ch. 22:1)
•
The Cell Cycle Has 3 Main Phases
A. Interphase
B. Mitosis (has __________ parts)
1. _______________
2. _______________
3. _______________
4. _______________
C. Cytokinesis

A trick to help you remember...
o I play matches at the court….
Name ____________________________________
Mrs. Geithner-Marron Bio 200
Phase & What Happens
A. Interphase
B1. (mitosis) Prophase
B2. (mitosis) Metaphase
B3. (mitosis) Anaphase
B4. (mitosis) Telophase
C. Cytokinesis
Date __________
Period _________
Drawing of Phase
Name ____________________________________
Mrs. Geithner-Marron Bio 200
Date __________
Period _________
Meiosis (Ch. 22:2)
•
In germ cells of ________________________________
– produces ________________________________________________________
•
•
chromosome # must be reduced in the formation of gametes
–
What if the # of chromosomes wasn’t reduced?
–
How is the reduction of chromosome # achieved???
Meiosis
A. _________________
B. Meiosis 1 (__________________________ D. Meiosis 1 (_________________________
___________________________________)
–
has 4 parts
___________________________________)
–
has 4 parts
1. _____________
1. _____________
2. _____________
2. _____________
3. _____________
3. _____________
4. _____________
4. _____________
C. _____________
E. _____________
Name ____________________________________
Mrs. Geithner-Marron Bio 200
traits.
•
Meiosis Has 2 Stages (Divisions)…
Date __________
Period _________
Name ____________________________________
Mrs. Geithner-Marron Bio 200
•
Date __________
Period _________
Meiosis 1
Phase & What Happens
A. Interphase
B1. (meiosis 1) Prophase 1
B2. (meiosis 1) Metaphase 1
B3. (meiosis 1) Anaphase 1
B4. (meiosis 1) Telophase 1
C. Cytokinesis 1
Drawing of Phase
Name ____________________________________
Mrs. Geithner-Marron Bio 200
•
Date __________
Period _________
From Meiosis 1 to Meiosis 2…
•
Replication ______________________________________ occur again before meiosis 2
a. daughter cells from meiosis 1 _________________________________________
•
•
Meiosis 2 happens in _____________________________________________________
Meiosis 2
Phase & What Happens
D1. (meiosis 2) Prophase 2
D2. (meiosis 2) Metaphase 2
D3. (meiosis 2) Anaphase 2
D4. (meiosis 2) Telophase 2
E. Cytokinesis 1
Drawing of Phase
Name ____________________________________
Mrs. Geithner-Marron Bio 200
•
Date __________
Period _________
End Result of Meiosis
•
In males:
a. _______________________________________
•
•
all 4 daughter cells become _____________
In females:
a. _______________________________________
•
•
only 1 daughter cell becomes _____________________________________
•
other 3 daughter cells are small, nonfunctional ________________________
Each gamete gets _______________________________________________________
a. due to ________________________________________________________
•
____________________________________
b. Example shown (below)
•
4 possible combos in each gamete (of each parent)
–
16 combos possible for zygote
Name ____________________________________
Mrs. Geithner-Marron Bio 200
•
Date __________
Period _________
Fertilization
•
Fertilization is the ______________________________________________________
a. forms a _________________________________________________________
•
which will ___________________________________________________
b. ___________________________ the diploid number
•
Cell Reproduction in Prokaryotes
•
Prokaryotes have a
_______________________________________________
•
cell reproduction is by ______________________________
a. __________________________________________
b. __________________________________________
c. Each daughter cell is __________________________
__________________________________________
_________________________________________
Name ____________________________________
Mrs. Geithner-Marron Bio 200
Date __________
Period _________