What you should know• Cell division is a means of i_________ the
number of c____ in an organism
• Nucleus of the cell controls c___ a______, including c____ d_______
• E___ of the t___ cells produced by cell division has a complete set of c__________ and the s_____ information. This ensures there is no l____ of g______ i________ in the t___ new b____cells
ncreasing
ells
ell ctivities
ell ivision
ach wo
hromosomes ame
oss enetic
nformation wo ody
• Cell division occurs in ____ stages
• Division of the c_________ and division of the nucleus called m_______.
• Before the nucleus divides each chromosome is c_____ so there is a copy chromosome (c_________) for e___ of the two new cells
• The copy chromosomes are held together by a c__________ and are called c__________
two
ytoplasm
itosis
opied
hromatid ach
entromere
hromatids
_______ copy chromosomes (chromatids)
_____chromosomes in e____ n___ c____ and ___ chromosomes were in the original p________ b____cell
6
3ach ew ell3
arentody
_______ copy chromosomes (chromatids)
_____chromosomes in e____ n___ c____ and ___ chromosomes were in the original p________ b____ cell
4
2ach ew ell
2arent
ody
_______ copy chromosomes (chromatids)
_____chromosomes in e____ n___ c____ and ___ chromosomes were in the original p________ b______cell
63
ach ew ell3
arentody
_______ copy chromosomes (chromatids)
_____chromosomes in e____ n___ c____ and ___ chromosomes were in the original p________ b_____cell
8 4ach ew ell
4arent
ody
Describe what is happening
Draw or describe what happens next
1
Nuclear membrane disappears.Chromosomes being copied
Copy chromosomes (chromatids ) appear
Describe what is happening
Draw or describe what happens next
What type of cell is this? Animal or plant Animal
Cytoplasm dividing by tucking in.
Two cells are formed
Copy chromosomes (chromatids) have formed 4
Copy chromosomes (chromatids) line up at the equator of the spindle
Describe what is happening
Draw or describe what happens next
Describe what is happening
What type of cell is this? Animal or plant ?
Plant
New cell wall forms between the two new cells
Describe what is happening
Draw or describe what happens next
Copy chromosomes (chromatids) lined up at the equator of the spindle
Spindle separates the copy chromosomes (chromatids)
Describe what is happening
Draw or describe what happens next
The copy chromosomes (chromatids)are being separated
New nuclear membranes form round copy chromosomes.New cell wall forms
mitosis
Chromosomes (chromatids) are being pulled apart to opposite ends of the cell
To make sure there is no loss of genetic information (genes) in the new cells
mitosis
New cell wall developing
Division of cytoplasm
Chromosomes becoming visible
Nuclear membrane breaking down
To make sure there is no loss of genetic information (genes) in the new cells