Answer:
The genetic code exists as triplet CODON. The genetic code exists as TRIPLET codons, which are sets of THREE nucleotides in which each nucleotide is one of the FOUR kinds of ribonucleotides composing RNA.
Explanation:
RNA is a nucleic acid and is a polymer of ribonucleotides. Based on the type of the nitrogenous base, there are four different types of ribonucleotides. These are namely: adenylate, guanylate, uridylate, and cytidylate. The protein-coding sequence of mRNA is read in the form of genetic codes.
Each genetic code is a set of three nucleotides and codes for specific amino acids during the process of translation. Each of the nucleotides of genetic code can be one of the four ribonucleotides (adenylate, guanylate, uridylate, and cytidylate). For example, the genetic code for methionine (AUG) is composed of adenylate, uridylate, and guanylate.
Answer:
d) a polypeptide missing an amino acid.
Explanation:
Deletion is a type of mutation when one or more codons from the reading frame are removed. This results in the production of a relatively shorter mRNA that lacks one or more codons otherwise present in the non-mutated mRNA. When there is a deletion of a single codon in the gene for cystic fibrosis, the resultant shorter mRNA codes for a polypeptide chain that does not carry one amino acid. For example, deletion of one codon results in deletion of a Phe residue present at position 508 in CFTR. The mutated transmembrane protein CFTR folds in an improper way.
Answer:
The percentage of carbon dioxide in the air is 0.04%