Mitosis (Ew Ew Ew) Flashcards
1
Q
What is the stage before mitosis called and what occurs during it?
A
- Interphase
- cell contents including chromosomes are duplicated
- each chromosome consists of 2 sister chromatids held together by a centromere
2
Q
Why is mitosis important?
A
For growth and development of multicellular organisms
3
Q
What is the mnemonic for mitosis?
A
PMAT
Prophase
Metaphase
Anaphase
Telophase
4
Q
What occurs in prophase?
A
- DNA condenses
- Nuclear membrane/envelope dissappears
- Spindle fibres form
5
Q
What occurs in metaphase?
A
- Chromosomes line up at equator (middle ( : ) )
- Spindle fibres attach to centromeres
6
Q
What occurs in metaphase?
A
- Chromosomes line up at equator (middle ( : ) )
- Spindle fibres attach to centromeres
7
Q
What occurs in anaphase?
A
- Chromatids are pulled apart into individual chromosomes
- chromosomes are pulled towards the poles (sides (: :) ) by Spindle fibres and motor proteins
8
Q
What occurs in telophase?
A
- Nuclei form around chromosomes
- Spindle fibres disintergrate
- Mitosis ends
9
Q
What occurs in cytokinesis?
A
Cell membrane and cytoplasm divide to give two genetically identical daughter cells
10
Q
What occurs in G0?
A
Cells rests before mitosis occurs again
11
Q
Define diploid
A
Two copies of DNA, one from mother and one from father, but code for same thing
12
Q
Define diploid
A
Two copies of DNA, one from mother and one from father, but code for same thing
