Molecular Biology IB Material Flashcards
1
Q
What is are histones?
A
most common proteins in eukaryotes
2
Q
What is the name of DNA wrapped around a group of eight histones are called?
A
nucleosomes
3
Q
What are the functions of nucleosomes?
A
help supercoil DNA, making chromosomes shorter and fatter for mitosis and meiosis, help regulate transcription and expression of genes within cells
4
Q
What did Medeldson and Stahlused bacterial do?
A
used bacterial cultures of Escheruchiab coli and an isotop of heavy nitrogen to tag DNA
findings supported semi conservative method of DNA replication
