Concept 22 DNA words are three letters long.
Marshall Nirenberg
Marshall Nirenberg continued his research as a member of the National Heart, Lung, and Blood Institute of the National Institutes of Health until he passed away in 2010.
- Explaining the experiment to determine the RNA able to direct the synthesis of proteins.
- Discovering that polyU directs the synthesis of polyPhenylalanine.
- Working out the base compositions for the codons in the genetic code.
- Using charged tRNAs to prove triplet nature of the genetic code, and to determine the base sequences of codons
- Working out the 64 codon combinations: the joy of doing science at this time.
- Doing the experiments to determine whether the genetic code is universal, and their subsequent philosophical impact.
- Finding out he won the Nobel prize.
DNA and proteins are key molecules of the cell nucleus.
One gene makes one protein.
A gene is made of DNA.
Bacteria and viruses have DNA too.
The DNA molecule is shaped like a twisted ladder.
A half DNA ladder is a template for copying the whole.
RNA is an intermediary between DNA and protein.
DNA words are three letters long.
A gene is a discrete sequence of DNA nucleotides.
The RNA message is sometimes edited.
Some viruses store genetic information in RNA.
RNA was the first genetic molecule.
Mutations are changes in genetic information.
Some types of mutations are automatically repaired.