Homework SourseGene M encodes a polypeptide with 324 amino acids A mutation
Gene M encodes a polypeptide with 324 amino acids. A mutation has changed codon 134 of this gene to UAA, producing allele m1.
How many amino acids are in the polypeptide coded by allele m1?
May the mutation revert?
If no, explain why not.
If yes, explain two different reverse mutations that could result?
Gene M encodes a polypeptide with 324 amino acids. A mutation has changed codon 134 of this gene to UAA, producing allele m1.
How many amino acids are in the polypeptide coded by allele m1?
May the mutation revert?
If no, explain why not.
If yes, explain two different reverse mutations that could result?
How many amino acids are in the polypeptide coded by allele m1?
May the mutation revert?
If no, explain why not.
If yes, explain two different reverse mutations that could result?
Solution
133 amino acids are coded in the polypeptideby allele m1.
Yes. the mutation can be reversed if there is a point mutation within the 134 codon which will produce the same amino acid as before.
The second method is the supressor gene for the non-sense mutation that occurs in the translational apparatus that is, the tRNA that allows the insertion of a amino acid that will result in a phenotype of the wild type or close to the wild type
The mutation is supressed only if the protien produced is a functional one. The supression on a non-sense mutation is an incomplete suppression.
