Planner
C: Cell Division
H: none
NBTC
2.What’s on the left
3.What’s on the right
4-5. Save Fred
6-7. Questioning
8-9 Traits Lab
10-11 Microscope
12-13 Cells
14-15 Cell Division
Aug 24
Bellwork-
Set Up…
• pages 14 and 15
Cell with
chromosomes
inside the nucleus
Genes are found on the
chromosomes.
Genes are
always in
pairs. Each
chromosome
has many
gene pairs.
Chromosomes are made DNA.
A gene is a section of that DNA .
Purposes of
Cell Division
fold
Purposes of
C
e
l
l
D
i
v
i
s
i
o
n
cut
in Humans
Purpose: Cell division for
reproduction creates
offspring with traits from
both mother and father.
Why it’s important: If
offspring are created, the
species continues. If not,
the species becomes
extinct.
makes
Called:
MEIOSIS
MOM
egg
DAD
egg
½ chromosomes from Mom
offspring
sperm
sperm
½ chromosomes from Dad
(reproduction)
Purpose: Cell division for
growth and repair creates
exact copies of a cell.
Why it’s important: Makes it
possible for a living thing to
grow; creates new cells to
replace damaged or dead
cells.
Called:
MITOSIS
Skin Cell
Chromosomes make
copies
Half go to each new cell
Skin Cell
Skin Cell
exact copies (growth & repair)