Worksheet: Mutations Practice
DNA Mutations Practice Worksheet Name: ___________________
DIRECTIONS: Transcribe and translate the original DNA sequence. Then, do the same for each mutated DNA sequence. Then, determine the consequence, if any, for each mutation, by circling your choice for each question. You will need a Genetic Code Chart.
|Original DNA sequence: |TAC |ACC |TTG |GCG |ACG |ACT | |
|amino acids: | | | | | | | |
|Mutated DNA sequence #1:|TAC |ATC |TTG |GCG |ACG |ACT | |
|How did the mutation |Silent |missense |nonsense |No stop signal |1 amino acid added/ |All the amino acids changed after|
|affect the amino acid | | | | |deleted |the point of mutation |
|sequence (protein)? | | | | | | |
|(Circle one.) | | | | | | |
|Mutated DNA sequence #2:|TAC |GAC |CTT |GGC |GAC |GAC |T |
|How did the mutation |Silent |missense |nonsense |No stop signal |1 amino acid added/ |All the amino acids changed after|
|affect the amino acid | | | | |deleted |the point of mutation |
|sequence (protein)? | | | | | | |
|(Circle one.) | | | | | | |
|Mutated DNA sequence #3:|TAC |ACC |TTA |GCG |ACG |ACT | |
|How did the mutation |Silent |missense |nonsense |No stop signal |1 amino acid added/ |All the amino acids changed after|
|affect the amino acid | | | | |deleted |the point of mutation |
|sequence (protein)? | | | | | | |
|(Circle one.) | | | | | | |
|Mutated DNA sequence #4:|TAC |ACC |TTG |GCG |ACT |ACT | |
|How did the mutation |Silent |missense |nonsense |No stop signal |1 amino acid added/ |All the amino acids changed after|
|affect the amino acid | | | | |deleted |the point of mutation |
|sequence (protein)? | | | | | | |
|(Circle one.) | | | | | | |
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