Question

Which of the following is/are correct matching(s)?

	Codon	Amino acid
i.	5’ AUG 3’	Serine
ii.	5’ AUC 3’	Tyrosine
iii.	5’ AUG 3’	Methionine
iv.	5’ GUG 3’	Valine

A. (i) and (iii)
B. All of these
C. (ii), (iii) and (iv)
D. (i), (ii) and (iii)

Answer 1

Hint: A DNA or RNA molecule's three following nucleotides that codes for a certain amino acid. Codons can be used to indicate the beginning or finish of a translation.

Complete step by step solution:
Three consecutive nucleotides that are specifically ordered in the genetic code to specify a particular amino acid in a protein or to initiate or terminate protein synthesis. Codons are units of genomic information made up of three nucleotides (trinucleotides) in DNA or RNA that code for a specific amino acid or indicate the end of protein synthesis (stop signals). There are 64 distinct codons, of which 3 serve as stop signals and 61 identify amino acids. Codons hold the key to translating between these two languages. The term "genetic code" refers to the full set of codons.
One amino acid is represented by one codon in each (or stop signal). Codons hold the key to translating between these two languages. The term "genetic code" refers to the full set of codons. One amino acid is represented by one codon in each (or stop signal). The complete collection of codons is known as the genetic code. Each codon stands for a single amino acid (or stop signal). There are 64 different three-letter nucleotide sequences that can be created from the four nucleotides, or permutations, that make up the genetic code.
A degeneration codon is one that specifies a single amino acid along with other codons. Arginine is coded by AGA. AGG, CGA, CGC, CGG, and CGT codons all code for the same amino acid. The first codon of the mRNA is called the initiation codon. The start codon AUG codes for methionine. Translation is terminated by nonsensical codons. Three nonsense codons—UAG, UAA, and UGA—are present. A codon in the mRNA has a complementary area on the tRNA called an anticodon. AGU is the TCA anticodon.
So, option (C) is correct.

Note:
A, C, T, and G are the four nucleotides that make up DNA, whereas 20 amino acids are used to make proteins. Codons are triplets of nucleotides that specify amino acids. Therefore, a minimum of 3 base pairs are needed for the 4 nucleotides to account for all 20 amino acids.