26.4. Nucleic Acids http://www.ck12.org
Problems
- A segment of a DNA strand has the base sequence G−C−A−C−T−G−G−A−C. Write the base sequence
that would be found on the other strand. - Using the genetic code listed above (Table26.2), write the amino acid sequence formed by translation of the
following sequence into a peptide: T−A−G−G−A−C−C−C−T−A−G−C - Use the table above (Table26.2) to write a DNA base sequence that codes for the peptide Ala-Gln-Trp. Is
there more than one possible answer to this question? Explain.
Further Reading / Supplemental Links
- DNA-Structure, http://www.chemguide.co.uk/organicprops/aminoacids/dna1.html#top
- ProteinSynthesis, http://www.wisc-online.com/Objects/ViewObject.aspx?ID=ap1302
Points to Consider
DNA must be able to reproduce itself as cells divide so that the genetic material can be passed on. That process is
called replication. Next, DNA is transcribed into RNA. Finally, a form of RNA is used to make proteins in a process
called translation.
- How does DNA replicate itself during cell division?
- What is the mechanism by which proteins are built in the cell from the genetic code of the DNA?