The correct answer is A) The genetic code is composed of 64 codons, of which three are STOP codons.

Here's why:

The genetic code is a set of rules used by living cells to translate information encoded within genetic material (DNA or mRNA sequences) into proteins. It is composed of 64 codons, which are sequences of three nucleotides.

Out of these 64 codons, 61 codons code for 20 different amino acids, which are the building blocks of proteins. The remaining three codons do not code for any amino acids, instead, they signal the end of protein synthesis. These are known as STOP codons.

Option B is incorrect because, as mentioned, three of the 64 codons are STOP codons and do not code for amino acids.

Option C is incorrect because the 64 codons do not each code for a different amino acid. There are only 20 amino acids, and some are coded for by more than one codon.

Option D is incorrect because the genetic code is nearly universal and is the same in all organisms, with a few minor exceptions.

Option E is incorrect because the genetic code is not composed of DNA or RNA. It is a set of rules for translating the information in DNA or RNA into proteins.

Question

The correct answer is A) The genetic code is composed of 64 codons, of which three are STOP codons.

Here's why:

The genetic code is a set of rules used by living cells to translate information encoded within genetic material (DNA or mRNA sequences) into proteins. It is composed of 64 codons, which are sequences of three nucleotides.

Out of these 64 codons, 61 codons code for 20 different amino acids, which are the building blocks of proteins. The remaining three codons do not code for any amino acids, instead, they signal the end of protein synthesis. These are known as STOP codons.

Option B is incorrect because, as mentioned, three of the 64 codons are STOP codons and do not code for amino acids.

Option C is incorrect because the 64 codons do not each code for a different amino acid. There are only 20 amino acids, and some are coded for by more than one codon.

Option D is incorrect because the genetic code is nearly universal and is the same in all organisms, with a few minor exceptions.

Option E is incorrect because the genetic code is not composed of DNA or RNA. It is a set of rules for translating the information in DNA or RNA into proteins.

Knowee AI · Accepted Answer

The correct answer is A) The genetic code is composed of 64 codons, of which three are STOP codons.

Here's why:

The genetic code is a set of rules used by living cells to translate information encoded within genetic material (DNA or mRNA sequences) into proteins. It is composed of 64 codons, which are sequences of three nucleotides.

Out of these 64 codons, 61 codons code for 20 different amino acids, which are the building blocks of proteins. The remaining three codons do not code for any amino acids, instead, they signal the end of protein synthesis. These are known as STOP codons.

Option B is incorrect because, as mentioned, three of the 64 codons are STOP codons and do not code for amino acids.

Option C is incorrect because the 64 codons do not each code for a different amino acid. There are only 20 amino acids, and some are coded for by more than one codon.

Option D is incorrect because the genetic code is nearly universal and is the same in all organisms, with a few minor exceptions.

Option E is incorrect because the genetic code is not composed of DNA or RNA. It is a set of rules for translating the information in DNA or RNA into proteins.

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