transitions, which are pyrimidine-to-pyrimidine and purine-to-purine substitutions, such as T to C and A to G;

TLS Online TPP Program

#Id: 3597

#Unit 3. Fundamental Processes

“Dictionary” of amino acid code words in mRNAs.

TLS Online TPP Program

#Id: 3599

#Unit 3. Fundamental Processes

The third base of each codon plays a lesser role in specifying an amino acid than the first two.

TLS Online TPP Program

#Id: 3600

#Unit 3. Fundamental Processes

All the amino acids except methionine and tryptophan have more than one codon.

TLS Online TPP Program

#Id: 3601

#Unit 3. Fundamental Processes

In most cases, codons that specify the same amino acid differ only at the third base.

TLS Online TPP Program

#Id: 3603

#Unit 3. Fundamental Processes

All the codons will be formed with equal frequency if the ratio of A:T:G:C is 1:1:1:1 concentration in the cell.

TLS Online TPP Program

#Id: 3604

#Unit 3. Fundamental Processes

The translation machinery is composed of four primary components: mRNAs, tRNAs, aminoacyl-tRNA synthetases, and the ribosome.