- In a transversion mutation
a purine is replaced by pyrimidine or vv
- Supercoiled DNA attached to a protein core
Nucleoid
- DNA complexed with histones
Chromatin
- Intergenic sequences are
noncoding dna
"junk"
- group of enzymes produced by bacteria, cut dna molecule at specific bp
Restriction enzymes
- An invaluable aid in studies involving nucleic acid. It is the decrease in the absorbance of UV that accompanies the denaturation of DNA and used to monitor the process.
The hypochromic effect
- Which of the following is the largest and most complex structure?
chromosomes
- Which of the following statements is not true of mRNA?
A. Prokaryotic mRNAs are mainly polycistronic
B Eukaryotic mRNAs are mainly monocistronic
C Eukaryotic mRNAs are extensively modified after synthesis
D Prokaryotic mRNAs are immediately transmitted into protein without covalent modifications
E Prokaryotic mRNAs are capped with 7-methylguanosine
E
- A condition in which the phage genome is integrated into a host chromosome.
Lysogeny
- A defect in which of the following HAR's can result in microcephaly?
HAR1
- The change of a single base pair in a DNA chain is referred to as
point mutation
- A mutation caused by an alkylating agent is referred to as
transversion mutation
- A point mutation that converts the code for an amino acid to a premature stop signal is referred to as
non-sense mutation
- Which of the following is not an endogenous cause of DNA damage ?
radiation
- Point mutations that occur in a population to any extent are referred to as
single nucleotide polymorphisms