1. Rosalind Franklin’s research contribution was essential in _____.
a. establishing the single-stranded nature of DNA
b. establishing the principle of base pairing
c. establishing most of the principal structural features of DNA
d. sequencing DNA molecules
2. What does DNA ligase do?
a. breaks the hydrogen bonds between base pairs
b. seals gaps between assembled nucleotides
c. provides energy for nucleotide
d. assembly acts as an initiator to start the replication process
3. In order to visualize the DNA for a karyotype, _____.
a. DNA is treated with enzymes to open the compacted chromatin structure
b. DNA is treated with proteases to open the compacted chromatin structure
c. DNA is stained to visualize the DNA
d. DNA is treated with enzymes to compact the chromatin structure
4. Frameshift mutations may involve _____.
a. the substitution of nucleotides
b. the substitution of codons
c. the substitution of amino acids
d. the insertion of one to several base pairs