Questions: Question 1 (1 point) In the image below identify how the DNA has mutated by writing deletion, insertion or substitution.

Question 1 (1 point) In the image below identify how the DNA has mutated by writing deletion, insertion or substitution.
Transcript text: Question 1 (1 point) In the image below identify how the DNA has mutated by writing deletion, insertion or substitution.
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Solution

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Solution Steps

Step 1: Identify the Original DNA Sequence

The original DNA sequence is:

GAGA
CTCT
Step 2: Analyze Mutation A

Compare the original sequence with the mutated sequence in A:

Original: GAGA
          CTCT
Mutated:  GGGA
          CCTT
  • The first base pair (G) is substituted with another G.
  • The second base pair (A) is substituted with another G.
  • The third base pair (G) is substituted with another G.
  • The fourth base pair (A) is substituted with another A.
Step 3: Analyze Mutation B

Compare the original sequence with the mutated sequence in B:

Original: GAGA
          CTCT
Mutated:  GA
          CT
  • The first two base pairs (GA) remain the same.
  • The last two base pairs (GA) are deleted.
Step 4: Analyze Mutation C

Compare the original sequence with the mutated sequence in C:

Original: GAGA
          CTCT
Mutated:  GAGAGAGA
          CTCTCTCT
  • The sequence is repeated twice, indicating an insertion.

Final Answer

  • A: Substitution
  • B: Deletion
  • C: Insertion
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