Eukaryotic Chromosomal DNA Flashcards
1
Q
What are chromosomes?
A
Chromosomes – linear DNA duplexes containing 2 ends (telomeres), a centromere (mediates attachment of microtubules to separate chromosomes into daughter cells), and multiple origins of replication
2
Q
How many chromosomes are in the human genome?
A
3.2 x 10^9 base pairs
3
Q
What does the human genome consist of?
A
22 somatic chromosomes and 2 sex chromosomes
4
Q
What is an exon?
A
Regions that code for DNA
5
Q
What is an intron?
A
Noncoding regions that are removed by splicing during transcription
6
Q
What is a transposable element?
A
DNA sequence that can change its position within the genome, sometimes creating or reversing mutations and altering the cell’s genome size.
