HEL Which of the following statements best describes why the change in only one DNA base of a gene does not always result in a different protein being produced by the gene?

A. The change prevents mRNA from being made.
B. Some codons code for the same amino acid.
C. Some codons are translated from DNA.
D. The change creates an additional mRNA strand.

The statement which best describes why the change in only one deoxyribonucleic acid (DNA) base of a gene does not always result in a different protein being produced by the gene is: A. The change prevents mRNA from being made.

Deoxyribonucleotides refers to the fundamental (basic) unit of a deoxyribonucleic acid (DNA).

Basically, deoxyribonucleotides contains a nitrogenous base and phosphate group that is referred to as deoxyribose sugar.

On a related note, the nitrogenous base of deoxyribonucleotides includes the following components:

Adenine (A).Guanine (G).Cytosine (C).Thymine (T).

Gene expression simply means the transcription of a gene into a messenger ribonucleic acid (mRNA), as well as its subsequent translation into protein.

In Genetics, the genes that are present in deoxyribonucleic acid (DNA) are mainly responsible for encoding protein molecules.

However, a change in a single deoxyribonucleic acid (DNA) base of a gene doesn't always result in the production of a different protein by the gene because the change prevents messenger RNA (mRNA) from being made.

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Synonym codons code a single amino acid. In consequence, 'some codons code for the same amino acid' indicates why a change in one DNA base of a gene does not always result in a different protein (Option B).

During gene transcription, a single-stranded fragment of DNA is used as template to create a complementary messenger RNA (mRNA) sequence.Subsequently, this mRNA sequence is then used as template to create a polypeptide (i.e., a protein) by a process called translation. The triplets of nucleotides or 'codons' in the mRNA sequence determine a specific amino acid that will be added to the polypeptide chain.There are 64 codons: 61 codons represent only 20 amino acids, while the remaining three (3) are stop codons that determine the end of translation.Thus, the genetic code is said to be redundant because there are different codons that encode the same amino acid. These codons are called synonymous codons.For example, phenylalanine is an amino acid residue that can be specified by two different codons (UUU and UUC).

In conclusion, the statement 'some codons code for the same amino acid' BEST describes why the change in one DNA base of a gene does not always result in a different protein (Option B).

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