THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
How many mRNA nucleotides make up a codon? ex. (A-U-G)
|
|
1
|
|
|
3
|
|
|
5
|
|
|
15
|
Explanation:
Detailed explanation-1: -Figure 1: In mRNA, three-nucleotide units called codons dictate a particular amino acid. For example, AUG codes for the amino acid methionine (beige).
Detailed explanation-2: -A codon is a DNA or RNA sequence of three nucleotides (a trinucleotide) that forms a unit of genomic information encoding a particular amino acid or signaling the termination of protein synthesis (stop signals).
Detailed explanation-3: -There are three termination codons that are employed at the end of a protein-coding sequence in mRNA: UAA, UAG, and UGA.
Detailed explanation-4: -It was also known that there are only four nucleotides in mRNA: adenine (A), uracil (U), guanine (G), and cytosine (C).
There is 1 question to complete.