Concept explainers
If a parental DNA strand has the base sequence A-T-T-G-C-A-C-T, DNA polymerase would synthesize a new strand with the sequence
- a. A-T-T-G-C-A-C-T.
- b. T-A-A-C-G-T-G-A.
- c. C-G-G-T-A-C-A-G.
- d. The sequence of the new strand cannot be determined from the information given.
Introduction:
DNA is “Deoxyribonucleic acid” as it serves as the genetic material for all eukaryotic and prokaryotic cell. It carries all the information which is required for proper growth, development, in an organism.
Answer to Problem 1MC
Correct answer:
DNA polymerase would synthesize a new strand with the sequence
Option (b). is given as “
Explanation of Solution
Justify reasons for the correct statement:
If the parent strand is having
Hence, option (b). is correct.
Justify reasons for the incorrect statements:
Option (a) is given as “
DNA is a double helical structure in which the two strands are complementary to each other. Adenine always bonds with thymine and guanine always binds with cytosine. Hence, it is a wrong answer.
Option (c) is given as “
The two DNA strands are complementary to each other and adenine always paired with thymine, not with cytosine. Hence, it is a wrong answer.
Option (d) is given as “The sequence of the new strand cannot be determined from the information given”.
The new sequence form is
Hence, options (a), (c,) and (d) are incorrect.
The new strand of DNA formed by DNA polymerase enzyme is
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Chapter 12 Solutions
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