Concept explainers
To write:
Whether there is any similarity between the codons that code for same amino acids.
Introduction:
The mRNA consists of many bases. A collection of three bases that has the capability to code for a particular amino acid is called codon. Codons are present in the mRNA.
To write:
The reason that mutation affecting the nucleotide in the third position of a codon is less likely to affect the structure of protein than a mutation that affects the first position of the codon
Introduction:
The group of three bases that codes for amino acids is called a codon. The codon is composed of first, second, and third position. The amino acids join together to form a protein. The mRNA produces by the process of transcription contains codons.
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EP BIOLOGY:SCIENCE F/LIFE...-MOD.ACCESS
- Is it reasonable that codons for the same amino acid have one or two nucleotides in common? Why or why not?arrow_forwardCan you give further explanations regarding this topic? We are about to tackle this in our next lesson and our teacher assigned us to answer this for practice. But I do not have any idea on how to do this.arrow_forwardDuring planetary exploration a new life form is discovered which has a DNA genome containing 6 different bases rather than the familiar four. The life form contains proteins with 25 different amino acids. Codons on Earth comprise three nucleotides; assuming a non-overlapping genetic code that includes initiation and termination codons, how many nucleotides would you predict to constitute a codon in the new life form, assuming all codons to be the same length? Briefly explain your answer.arrow_forward
- Below is the 5’–3’ strand of a double-stranded DNA molecule with the following nucleotide sequences:5’ C C T A T G C A G T G G C C A T A T T C C A A A G C A T A G C 3’ 1. If the RNA synthesized above (item #1) is a functional mRNA and all the nucleotides belong to an exon,a. how many codons are present in this mRNA?b. how many codons actually code for proteins in this mRNA?c. what stop codon is present in this mRNA?arrow_forwardThis activity breaks down protein synthesis using the metaphor of PIZZA! Use your Amino Acids Reference Sheet to complete the following table. Fill in the blank spaces of each row with either the missing DNA triplet, the mRNA codon, or the Amino Acid. While there are actually multiple codons that code for any one amino acid, for this activity there only needs to be one DNA triplet and one corresponding mRNA codon recorded for each amino acid. Remember: RNA uses uracil (U) instead of thymine (T)! TTG GGG CGT AAA TTT CAA DNA AAC UAU CAC GCA AAA mRNA codon Asparagine Proline Tyrosine Amino Acid Histidinearrow_forwardBelow is the 5’–3’ strand of a double-stranded DNA molecule with the following nucleotide sequences:5’ C C T A T G C A G T G G C C A T A T T C C A A A G C A T A G C 3’ 1. If the RNA synthesized above (item #3) is a functional mRNA and all the nucleotides belong to an exon,a. how many codons are present in this mRNA?b. how many codons actually code for a protein in this mRNA?c. what stop codon is present in this mRNA?arrow_forward
- explain why a mutation in the dna nucleotide sequence that corresponds to the 3rd nitrogen base in the mrna codon is not as serious as a mutation in the dna that corresponds to the first nitrogen base in the mrna codonarrow_forwardLook at Table 26.3 and find codons for the following amino acids:(a) Val (b) Arg (c) Serarrow_forwardThe genetic information contained in DNA consists of a linear sequence of coding units known as codons. Each codon consists of three adjacent DNA nucleotides that corresponto a single amino acid in a protien. The E.coli DNA molecule contains 4.70 x 10^6 base pairs. Determine the number of codons that can be present. Assuming that the average protein in E.coli consists of a chain of 400 amino acids, calculate the maximum number of protiens that can be coded by an E.coli DNA molecule.arrow_forward
- Compare the codons with a pyrimidine, either U or C, as the second base. Do the majority of the amino acids specified by these codons have hydrophobic or hydrophilic side chains?arrow_forwardLook at the codon "UUU" in the codon chart. If the 3rd nucleotide (3rd Uracil) was mutated to a "C" (Cytosine), would the Amino Acid change? Explain.arrow_forwardTranslate the following RNA sequence by using the genetic below. Start at the beginning of the sequence and don't worry about start and stop codons. Write out the sequence using the single letter code. (This table displays the amino acids in a single-letter code instead of a three-letter code. Each codon is found by matching the first position on the left of the chart, second position at the top, and last position at the right. For example, the codon CAG gives the amino acid "Q") 5' UCAACUGCGAAUCUGGAAUAU 3'arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning