BIOLOGY
PROTEINS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
codon
|
|
|
transcription
|
|
|
translation
|
|
|
replication
|
Detailed explanation-1: -The three-letter nature of codons means that the four nucleotides found in mRNA-A, U, G, and C-can produce a total of 64 different combinations. Of these 64 codons, 61 represent amino acids, and the remaining three represent stop signals, which trigger the end of protein synthesis.
Detailed explanation-2: -The nucleotide triplet that encodes an amino acid is called a codon.
Detailed explanation-3: -Each three-letter sequence of mRNA nucleotides corresponds to a specific amino acid, or to a stop codon. UGA, UAA, and UAG are stop codons. AUG is the codon for methionine, and is also the start codon. Image credit: “The genetic code, ” by OpenStax College, Biology (CC BY 3.0).
Detailed explanation-4: -It was also known that there are only four nucleotides in mRNA: adenine (A), uracil (U), guanine (G), and cytosine (C).