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This is the normal nucleotide sequence on a DNA strand:

A—C—T—G—G—A—T
What is a substitution?

Select one:
a.
A—C—T—G—C—G—A—T

b. A—C—T—G—A—T
c. A—G—T—G—G—A—T
d. A—C—U—G—G—A—U

User Fieg
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2 Answers

5 votes
Well it is not A because A is INSERTION B is DELETION IT WOULD BE EITHER  C or D
User EYe
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1 vote
The correct answer is: A - G - T - G - G - A - T
User Chris Kent
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