Genes And Chromosomes Flashcards
Bacterial mRNA is expressed as ______________ while eukaryotic mRNA is expressed as ______________
Polcistronic, monocistronic
What does the term satellite DNA mean?
Around centromeres
What does the term minisatellite mean?
Fingerprinting
What does the term micro-satellite refer to?
CA repeats
Telomeric regions of human chromosomes contain tandem repeats of what sequence?
TTAGGG
When are positive supercoils produced in DNA?
When DNA is unwound for replication or transcription
How are negative supercoils induced in bacteria?
Topoisomerase II
How are negative supercoils induced in eukaryotes?
Binding of DNA to histone core
Antibiotics target what in bacterial?
Topoisomerase II
What is the target for anit-tumor agents in humans?
Topoisomerase I
What amino acids are histone proteins rich in?
Lysine and arginine
How long is the DNA that is wrapped around the histone core?
146 bp
Do genes in bacterial DNA contain introns?
No
