what does it mean for two codons to be synonymous?group of answer choicesthey share two of the same nucleotides in their codon sequence.they encode the same amino acid.they share one of the same nucleotides in their codon sequence.they occur in equal abundance in an mrna sequence.they are adjacent on the mrna.

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21-10-2022
Biology

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what does it mean for two codons to be synonymous?group of answer choicesthey share two of the same nucleotides in their codon sequence.they encode the same amino acid.they share one of the same nucleotides in their codon sequence.they occur in equal abundance in an mrna sequence.they are adjacent on the mrna.

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Synonymous codons are different codons that encode the same amino acid.It has been demonstrated for all creatures that the distribution of these codons in a genome is not random, despite the fact that synonymous codons encode the same amino acid.

What does it mean for two codons to be synonymous?

The ratio of the observed codon frequency to the anticipated frequency, assuming that all synonymous codons for the same amino acid are used equally, is known as relative synonymous codon usage, or RSCU.

Previously, it was believed that synonymous variants, which are codon substitutions that do not modify the encoded amino acid, had no impact on the characteristics of the protein that was made.

The mRNA is then dragged into the ribosome, where it is translated into an amino acid sequence utilizing the tRNAs as adaptors to add each amino acid in the proper order to the end of the expanding polypeptide chain when its codons come into contact with the ribosome's active site.

The entire collection of codons is referred to 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.

Each codon gives the cell instructions on whether to begin building a protein chain, add a particular amino acid to the expanding protein chain, or stop building a protein chain altogether.

For instance, the messenger RNA codon GCA indicates that alanine will be added to the protein chain.

Synonyms are codons that both encode the same amino acid.The redundancy or degeneracy of the genetic codon is the term used to describe this particular characteristic of genetic code.

Only twenty amino acids can be linked to the 64 potential codons in an organism.

Protein sequences are altered by nonsynonymous mutations, which are commonly exposed to natural selection.The same is true for nonsense mutations that cause CDSs to contain premature stop codons (coding sequences).

However, synonymous mutations are intuitively believed to be neutral in terms of evolution and functional silence

Synonymous mutations occur when the DNA sequence that codes for the amino acids in a protein sequence is altered without altering the amino acid that is encoded.

These modifications typically take place in the third position of a codon because of the genetic code's redundancy (many codons represent the same amino acid).

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