Which of the following statements is true for the genetic code?The number of various amino acid types is higher than the number of various tRNA anticodons in a given cell type.One codon can determine various types of amino acids in the same cell.One amino acid type can be determined by various codon types in the same cell.The genetic code is universal and 100% identical, including also the coding of mitochondria.The operon model proves the overlapping nature of genetic coding.
Question
Which of the following statements is true for the genetic code?The number of various amino acid types is higher than the number of various tRNA anticodons in a given cell type.One codon can determine various types of amino acids in the same cell.One amino acid type can be determined by various codon types in the same cell.The genetic code is universal and 100% identical, including also the coding of mitochondria.The operon model proves the overlapping nature of genetic coding.
Solution
The statement that is true for the genetic code is: "One amino acid type can be determined by various codon types in the same cell."
Explanation:
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The genetic code is degenerate, meaning that more than one codon can specify the same amino acid. For example, the amino acid leucine can be coded by six different codons: UUA, UUG, CUU, CUC, CUA, and CUG.
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The number of various amino acid types (20) is less than the number of various tRNA anticodons. This is because multiple tRNAs (with different anticodons) can bind to the same amino acid, a phenomenon known as wobble base pairing.
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One codon does not determine various types of amino acids in the same cell. Each codon specifies one and only one amino acid.
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The genetic code is nearly universal, but not 100% identical in all organisms. For example, the genetic code of mitochondria varies slightly from the standard genetic code.
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The operon model does not prove the overlapping nature of genetic coding. The operon model, proposed by François Jacob and Jacques Monod, describes how genes are regulated in bacteria. It does not address the issue of overlapping genes.
Similar Questions
Which of the following is true about the genetic code?Group of answer choicesIt is universal, without exception.Several codons may code for the same amino acidAll codons recognized by a given tRNA encode different amino acidsThe base in the middle of the anticodon is responsible for wobble .None of the above
n the genetic code, there are:Select one:a. The same number of codons and amino acidsb. More tRNAs than codonsc. More nucleotides than codonsd. More codons than amino acids
What does it mean that the genetic code is redundant? That each codon codes for more than one amino acid That each codon can bind to more than one anticodon That most amino acids are coded by more than one codon That each tRNA anticodon can be attached to multiple different amino acids None of the above
The genetic code: A) Is composed of 64 codons, of which three are STOP codons B) Is composed of 64 codons that code for amino acids C) Is composed of 64 codons, each coding for a different amino acid D) Is different from one organism to another E) Consists of DNA in eukaryotes, while in viruses it consists of RNA
For each statement, indicate whether it is true or false. The information contained in rRNA, called the genetic code, is carried in sets of three-nucleotide units called codons.A codon specifies an amino acid during translation. There are 64 possible codons that exist; therefore, amino acids can have more than one codon. There are 3 start codons and one stop codon within the genetic code.
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