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1. Which type of mutation is responsible for new variations (alleles) of a trait? 2. Which type of mutation results in abnormal amino acid sequence? 3. Which type of mutation stops the translation of the mRNA? 2. A geneticist found that a particular mutation had no effect on the protein coded by a gene. What do you
Worksheet: Mutations Practice There are three ways that DNA can be altered when a mutation (change in DNA sequence) occurs. 1. Substitution – one base-pairs is replaced by another: Example: G to C or A to G C G T C 2. Insertion – one or more base pairs is added to a sequence: Example: CGATGG –– CGAATGG GCTACC GCTTACC 3.
1. Which type of mutation is responsible for new variations (alleles) of a trait? 2. Which type of mutation results in abnormal amino acid sequence? 3. Which type of mutation stops the translation of the mRNA? 4. A geneticist found that a particular mutation had no effect on the protein coded by a gene.
Gene Mutations affect a single gene by changing its base sequence, resulting in an incorrect, or nonfunctional, protein being made. (a) A SUBSTITUTION mutation, occurs where one nucleotide base is replaced by another.
Mutations Worksheet Part 1: Gene Mutations In the chart below, transcribe the DNA sequence into mRNA. Then use the codon chart (below) to indicate what amino acids are being coded for by the base sequences listed for the mRNA. Then, tell what type of gene mutation is being illustrated. Choose from point mutation and frameshift mutation.
Fill in the mutation type for DNA sequences A, B & C. Use the mutation’s letter to answer questions 1-3. 1. Which type of mutation is responsible for new variations (alleles) of a trait? ________________________ 2. Which type of mutation results in abnormal amino acid sequence? ________________________________ 3.
Chromosomal mutations result from changes in a single gene. 3. Mutations that occur at a single point in the DNA sequence are mutations. 4. A mutation involving the insertion or deletion of a nucleotide is a(an) mutation. 5. Complete the table of types of chromosomal mutations. 6.
