BIO 304 FINAL questions and correct
answers
Where is satellite DNA found? - ✔✔Heterochromatic centromeric
regions
What types of tandem repeats are there? - ✔✔Short tandem repeats
(STR):
- microsatellites
- repeating DNA sequences less than 10 bp
- di or trinucleotides
Variable number tandem repeats (VNTR):
- minisatellites
- DNA sequences 10-100 bp
What do transposable elements include? - ✔✔Short interspersed
nuclear elements (SINE):
- less than 500 bp
Long interspersed nuclear elements (LINE):
- thousands of base pairs in length
(T or F) The number of STRs present at any site are highly conserved
between individuals. - ✔✔False
, (T or F) Alu elements are SINEs that typically encode an important
human protein, the restriction endonuclease Alu I. - ✔✔False
(T or F) The number VNTRs of each specific sequence at each location
varies from one individual to the next. - ✔✔True
(T or F) The human genome contains mobile genetic elements called
retrotransposons that encode reverse transcriptase to catalyze
transposition. - ✔✔True
(T or F) The most prominent example of LINEs in humans are L1
elements. - ✔✔True
Which type of DNA damage is repaired by the enzyme photolyase? -
✔✔Thymine dimers
Which enzyme is responsible for proofreading during replication? -
✔✔DNA polymerase
(T or F) Bacteria can distinguish between a newly replicated DNA strand
and the original template strand because the newly replicated strand is
methylated, whereas the original template strand is not. - ✔✔False
answers
Where is satellite DNA found? - ✔✔Heterochromatic centromeric
regions
What types of tandem repeats are there? - ✔✔Short tandem repeats
(STR):
- microsatellites
- repeating DNA sequences less than 10 bp
- di or trinucleotides
Variable number tandem repeats (VNTR):
- minisatellites
- DNA sequences 10-100 bp
What do transposable elements include? - ✔✔Short interspersed
nuclear elements (SINE):
- less than 500 bp
Long interspersed nuclear elements (LINE):
- thousands of base pairs in length
(T or F) The number of STRs present at any site are highly conserved
between individuals. - ✔✔False
, (T or F) Alu elements are SINEs that typically encode an important
human protein, the restriction endonuclease Alu I. - ✔✔False
(T or F) The number VNTRs of each specific sequence at each location
varies from one individual to the next. - ✔✔True
(T or F) The human genome contains mobile genetic elements called
retrotransposons that encode reverse transcriptase to catalyze
transposition. - ✔✔True
(T or F) The most prominent example of LINEs in humans are L1
elements. - ✔✔True
Which type of DNA damage is repaired by the enzyme photolyase? -
✔✔Thymine dimers
Which enzyme is responsible for proofreading during replication? -
✔✔DNA polymerase
(T or F) Bacteria can distinguish between a newly replicated DNA strand
and the original template strand because the newly replicated strand is
methylated, whereas the original template strand is not. - ✔✔False
