Chapter 1 Flashcards
1
Q
There are how many genes in human genome?
A
There are approx. 23000 genes in the human genome which represents only one fifth of the no. 100,000 predicted prior to completion of human genome project.
2
Q
What is chromatin ?
A
A complex of DNA and proteins (mostly histones) in which genes are contained.
3
Q
What is the basic unit of chromatin ?
A
The nucleosome
4
Q
What is nucleosome?
A
Basic unit of chromatin. Each nucleosome is composed of an octamer of histone proteins and approximately 140 base pairs of dna
