BIOC 385 - Quiz 10 with 100% correct
answers passed
What is the recombination product if resolvase enzyme cleaves and rejoins as a) site 1, b) site 2?
- correct answer ✔✔a) no change in sequence, b) sequence is a mixture
Individuals with mutations of BRCA have increased incidence of cancer because of
___________. - correct answer ✔✔decreased ability to repair double-strand DNA breaks.
Why does adding a higher concentration of a mutagenic compound to the filter paper on the
bacterial plate yield MORE bacterial colonies than a filter paper containing a lower
concentration of the same mutagenic compound? - correct answer ✔✔Because a higher
concentration of mutagen causes more reversion mutations of the His- phenotype.
Put the following steps in the correct order to synthesize DNA.
1. Addition of an RNA primer
2. Extension of the RNA primer
3. Conversion of double-stranded DNA to single-stranded DNA
4. Synthesize new DNA - correct answer ✔✔3; 1; 2; 4
RNA is more susceptible to backbone hydrolysis than DNA because of the___________. -
correct answer ✔✔presence of a OH group.
Which enzyme synthesizes the RNA primer for DNA replication? - correct answer ✔✔DNA
primase
answers passed
What is the recombination product if resolvase enzyme cleaves and rejoins as a) site 1, b) site 2?
- correct answer ✔✔a) no change in sequence, b) sequence is a mixture
Individuals with mutations of BRCA have increased incidence of cancer because of
___________. - correct answer ✔✔decreased ability to repair double-strand DNA breaks.
Why does adding a higher concentration of a mutagenic compound to the filter paper on the
bacterial plate yield MORE bacterial colonies than a filter paper containing a lower
concentration of the same mutagenic compound? - correct answer ✔✔Because a higher
concentration of mutagen causes more reversion mutations of the His- phenotype.
Put the following steps in the correct order to synthesize DNA.
1. Addition of an RNA primer
2. Extension of the RNA primer
3. Conversion of double-stranded DNA to single-stranded DNA
4. Synthesize new DNA - correct answer ✔✔3; 1; 2; 4
RNA is more susceptible to backbone hydrolysis than DNA because of the___________. -
correct answer ✔✔presence of a OH group.
Which enzyme synthesizes the RNA primer for DNA replication? - correct answer ✔✔DNA
primase
