dactylospasm; Dactylosporangium aurantiacum subsp. hamdenesis; dactylozooid; dactylus-dactyly; Dad; daddy-long-legs; DADH; DADMS; DAF; DAF16; daffodil; Daffyâs Elixer; Dafilon; DAFNE; daft lamb; DAG; dagga; Dagger Sign; dagging; Dagnini; Dagnini, Giuseppe; Dagnini, Guido; dags; DAGU; DAH
These are comprised of 20 unique amino acids, and each is coded for by a stretch of DNA known as a codon. Codons are always 3 base-pairs (nucleotides) in length. DNA is made of 4 unique nucleotides; (A)denine, (G)uanine, (C)ytosine and (T)hymine. This means that there are 64 unique codons that can be made with these 4 bases (4*4*4). If codons were only 2 bases in length then the variety of codons that could be created would be less (only 16 unique sequences if there are still 4 nucleotides). More unique nucleotides would be required to get enough unique sequences to code for the 20 amino acids (as well as the STOP codons).
View Full Document. 11. How many nucleotides make up a codon? A) 1 B) 2 C) 3 D) 4 Explanation: Book, pages 282-283; lecture 10/31. A codon is found on a mRNA and is the genetic code for translation and ribosomes to make proteins. Historically, it was not known how many nucleotides needed to make up a codon, but simple math suggested that 3 nucleotides (4 (the number of nucleotides A, G, C and U) was enough when you took the nucleotide and cubed the number â you get 64.