Nuclei Flashcards
1
Q
Define chromatin.
A
The mixture of DNA, histones and other proteins that make up chromosomes.
2
Q
What are the functions of chromatin?
A
- to package DNA into a smaller volume.
- to strengthen DNA to allow meiosis and mitosis.
- control gene expression and DNA replication.
3
Q
At what stage are chromosomes most compacted?
A
Metaphase.
4
Q
Describe histones.
A
Positively charged proteins which negatively charged DNA wraps around.
