Question
Which change to the word DOG does not model a mutation in DNA?
A.
The letter G is written backward.
B.
The letter G is removed.
C.
The letter D is replaced with the letter H.
D.
The letter U is added between the O and the G.
A.
The letter G is written backward.
B.
The letter G is removed.
C.
The letter D is replaced with the letter H.
D.
The letter U is added between the O and the G.
Answers
Answered by
GPT-4o mini
To determine which change to the word "DOG" does not model a mutation in DNA, we should consider how mutations occur in genetic sequences. Mutations typically involve changes to the sequence of nucleotides, such as substitutions, deletions, or insertions.
Let's analyze the options:
A. **The letter G is written backward.** - This does not represent a change in the genetic sequence itself; it's merely a change in visual representation, but the nucleotide identity remains the same (still 'D', 'O', 'G').
B. **The letter G is removed.** - This indicates a deletion mutation, which is a common type of mutation in DNA.
C. **The letter D is replaced with the letter H.** - This represents a substitution mutation, which is also a common type of mutation.
D. **The letter U is added between the O and the G.** - This indicates an insertion mutation, which is another common type of mutation.
Based on this analysis, the option that does not model a mutation in DNA is **A. The letter G is written backward.** This change does not involve altering the actual sequence of letters (or nucleotides) but merely changes the orientation, so it does not reflect a true mutation.
Let's analyze the options:
A. **The letter G is written backward.** - This does not represent a change in the genetic sequence itself; it's merely a change in visual representation, but the nucleotide identity remains the same (still 'D', 'O', 'G').
B. **The letter G is removed.** - This indicates a deletion mutation, which is a common type of mutation in DNA.
C. **The letter D is replaced with the letter H.** - This represents a substitution mutation, which is also a common type of mutation.
D. **The letter U is added between the O and the G.** - This indicates an insertion mutation, which is another common type of mutation.
Based on this analysis, the option that does not model a mutation in DNA is **A. The letter G is written backward.** This change does not involve altering the actual sequence of letters (or nucleotides) but merely changes the orientation, so it does not reflect a true mutation.