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What would the amino acid be if A is added after the first codon?
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What if the first triplet was C A A?
If the first triplet in an RNA codon sequence was C A A, it would correspond to the amino acid lysine. Lysine is one of the essential amino acids needed for protein synthesis in the cell.
Why would an insertion or deletion mutation have more effect than a substitution mutation?
Base-pair insertions have a greater effect because they shift the information on the DNA down and change all following information, whereas substitutions may change only one amino acid or have no effect. -The base-pairs code for amino acids in groups of three. If just one base is added in, then this grouping is shifted upstream by one. The incorrect amino acids will be coded for and added to the protein being built. It could possibly stop the protein from being synthesized fully if the change creates a stop codon. This usually hinders the protein from functioning. -Base-pair substitution mutations only affect the codon (set of 3 base pairs) that it actually occurs in. If the mutation is in the first base-pair of the codon then the amino acid will change. If the mutation is in the second or third position of the codon then amino acid may or may not change; this is because amino acids can be coded for by more than one codon, but the first base-pair (and sometimes the second) is usually the same. A substitution can also change a codon to a stop codon. This may keep the amino acid the same, change only one amino acid (which does not always stop the protein from working), or cause the protein to prematurely stop being built.
What is the maximum number of amino acids that could be coded for by a sextion of mrna with the sequence guucagaacugu?
The maximum number of amino acids that could be coded for by a section of mRNA is determined by the reading frame. For the mRNA sequence "guucagaacugu," if we assume a start codon (AUG) at the beginning and use the genetic code to translate each codon to an amino acid, we can identify the potential amino acids until a stop codon is reached. In this case, the sequence could potentially code for at most three amino acids before a stop codon is encountered.
What does tRNA anticodon bind with?
tRNA anticodon binds with mRNA codon during translation to ensure the correct amino acid is added to the growing polypeptide chain.
How does an anticodon compare to a codon?
The anticodon is a sequence of three unpaired nucleotides in transfer RNA, which can bind through base pairing, to the complementary triplet of nucleotides, or codon in a messenger RNA molecule. The codon makes up the genetic code, the anticodon makes the amino acid.
What amino acid is coded for by the codon AUC?
The codon AUC codes for the amino acid isoleucine.
If an mRNA is made up of 60 bases how many codons does it contain and how many amino acid does it code for?
A codon is exactly three bases long, so an mRNA strand with 60 bases would contain 20 codons. The first codon will encode for methionine (this is called the "start" codon) and the last codon will be a "stop" codon, which does not encode for an amino acid. Thus, an mRNA strand of 60 bases will code for 19 amino acids. Keep in mind, it is possible for a stop codon to be anywhere on the mRNA strand, and when a stop codon reaches the ribosome, translation must stop. For example, if an mRNA strand contained 30 codons, and the 15th were a stop codon, the mRNA would only code for 14 amino acids and then be done. The other 15 codons would go untranslated.
UAG is a stop codon. What might happen if the uracil in this codon was changed to cytosine?
If the uracil in the UAG stop codon was changed to cytosine, the resulting codon would be CAG, which codes for the amino acid glutamine. This would lead to the translation machinery incorporating an amino acid instead of stopping translation, potentially leading to a longer or different protein being produced.
Complementary to an mRNA codon?
it depends on the codon spcified. The tRNA will have the complementary strand along with an amino acid, for which is specified by the mRNA. if the mRNA codon was "CGA" the tRNA codon would have an amino acid and the complementary codon of "GCU"
What if the first triplet was C A A?
If the first triplet in an RNA codon sequence was C A A, it would correspond to the amino acid lysine. Lysine is one of the essential amino acids needed for protein synthesis in the cell.
A polypeptide found in the cytoplasm of a cell contains 12 amino acids How many nucleotides would be required in the mRNA for this polypeptide to be translated?
Since each amino acid is coded for by a specific triplet of nucleotides (codon), and there is a start codon and a stop codon, we need 15 nucleotides in the mRNA (3 nucleotides for each amino acid + 3 for start codon + 3 for stop codon).
Why would an insertion or deletion mutation have more effect than a substitution mutation?
Base-pair insertions have a greater effect because they shift the information on the DNA down and change all following information, whereas substitutions may change only one amino acid or have no effect. -The base-pairs code for amino acids in groups of three. If just one base is added in, then this grouping is shifted upstream by one. The incorrect amino acids will be coded for and added to the protein being built. It could possibly stop the protein from being synthesized fully if the change creates a stop codon. This usually hinders the protein from functioning. -Base-pair substitution mutations only affect the codon (set of 3 base pairs) that it actually occurs in. If the mutation is in the first base-pair of the codon then the amino acid will change. If the mutation is in the second or third position of the codon then amino acid may or may not change; this is because amino acids can be coded for by more than one codon, but the first base-pair (and sometimes the second) is usually the same. A substitution can also change a codon to a stop codon. This may keep the amino acid the same, change only one amino acid (which does not always stop the protein from working), or cause the protein to prematurely stop being built.
What is the maximum number of amino acids that could be coded for by a sextion of mrna with the sequence guucagaacugu?
The maximum number of amino acids that could be coded for by a section of mRNA is determined by the reading frame. For the mRNA sequence "guucagaacugu," if we assume a start codon (AUG) at the beginning and use the genetic code to translate each codon to an amino acid, we can identify the potential amino acids until a stop codon is reached. In this case, the sequence could potentially code for at most three amino acids before a stop codon is encountered.
What would be the first three amino acids in the protein formed from this gene uagcgagg?
Each amino acid is coded for by a 3-base sequence known as a codon. Therefore you would need 9 bases to code for 3 amino acids.The sequence UAG-CGA-GG would not add three amino acids to a protein.For the sequence UAG-CGA-GG:UAG is a STOP codon - translation would cease at this point and no further amino acids would be added.CGA codes for Arginine.GG does not code for an amino acid - it would need one more base to be a codon. GGU, GGA, GGG and GGC all code for Glycine.
How might one missing nucleotide or the insertion of one additional nucleotide in a DNA strand alter the formation of the translated protein?
A missing nucleotide can shift the reading frame of the entire DNA sequence, leading to a completely different amino acid sequence being translated. The insertion of an additional nucleotide can have a similar effect, causing a frameshift mutation and disrupting the normal sequence of amino acids in the translated protein. Both scenarios can result in a nonfunctional or altered protein being produced.
What does tRNA anticodon bind with?
tRNA anticodon binds with mRNA codon during translation to ensure the correct amino acid is added to the growing polypeptide chain.
How does an anticodon compare to a codon?
The anticodon is a sequence of three unpaired nucleotides in transfer RNA, which can bind through base pairing, to the complementary triplet of nucleotides, or codon in a messenger RNA molecule. The codon makes up the genetic code, the anticodon makes the amino acid.
