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Select the incorrect statement regarding DNA replication
- a)Leading strand is formed in 5' → 3' direction
- b)Okazaki fragments are formed in 5' → 3' direction
- c)DNA polymerase catalyses polymerisation in 5' → 3' direction
- d)DNA polymerase catalyses polymerisation in 3' → 5' direction
Correct answer is option 'D'. Can you explain this answer?
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Select the incorrect statement regarding DNA replicationa)Leading str...
Synthesis of DNA by DNA polymerases occurs only in 5' → 3' direction. One strand called leading strand, is copied in the same direction as the unwinding helix. The other strand is known as lagging strand. Replication of lagging strand occurs in a discontinuous way, synthesizing short segments of DNA which are always in the 5' → 3' direction. These short segments are called Okazaki fragments joined together by the action of DNA ligase.
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Select the incorrect statement regarding DNA replicationa)Leading str...
Incorrect Statement: DNA polymerase catalyses polymerisation in 3' → 5' direction
Explanation:
DNA replication is the process by which a double-stranded DNA molecule is duplicated to produce two identical copies of the DNA. It is a vital process in cell division and is carried out by a complex machinery of enzymes and proteins. DNA polymerase is one of the key enzymes involved in DNA replication.
Leading Strand:
- The leading strand is synthesized continuously in the 5' → 3' direction.
- It is synthesized in the same direction as the replication fork is moving, allowing DNA polymerase to continuously add nucleotides in the growing chain.
Okazaki Fragments:
- Okazaki fragments are short, discontinuous segments of DNA that are synthesized on the lagging strand during DNA replication.
- They are formed in the 5' → 3' direction but in a series of short fragments.
- These fragments are later joined together by another enzyme called DNA ligase.
DNA Polymerase:
- DNA polymerase is the enzyme responsible for catalyzing the polymerization of nucleotides to form a new DNA strand during replication.
- It synthesizes the new DNA strand in the 5' → 3' direction, adding nucleotides to the 3' end of the growing chain.
- The DNA polymerase requires a primer, which provides the initial nucleotide for the polymerization process.
Correct Statement:
- DNA polymerase catalyzes polymerization in the 5' → 3' direction, not in the 3' → 5' direction.
- This means that the new DNA strand is synthesized in the 5' → 3' direction, while the template strand is read in the opposite 3' → 5' direction.
Overall:
- In DNA replication, the leading strand is synthesized continuously in the 5' → 3' direction, while the lagging strand is synthesized in short fragments called Okazaki fragments, also in the 5' → 3' direction.
- DNA polymerase catalyzes polymerization in the 5' → 3' direction, adding nucleotides to the growing chain.
- The incorrect statement is that DNA polymerase catalyzes polymerization in the 3' → 5' direction, which is not true.
Explanation:
DNA replication is the process by which a double-stranded DNA molecule is duplicated to produce two identical copies of the DNA. It is a vital process in cell division and is carried out by a complex machinery of enzymes and proteins. DNA polymerase is one of the key enzymes involved in DNA replication.
Leading Strand:
- The leading strand is synthesized continuously in the 5' → 3' direction.
- It is synthesized in the same direction as the replication fork is moving, allowing DNA polymerase to continuously add nucleotides in the growing chain.
Okazaki Fragments:
- Okazaki fragments are short, discontinuous segments of DNA that are synthesized on the lagging strand during DNA replication.
- They are formed in the 5' → 3' direction but in a series of short fragments.
- These fragments are later joined together by another enzyme called DNA ligase.
DNA Polymerase:
- DNA polymerase is the enzyme responsible for catalyzing the polymerization of nucleotides to form a new DNA strand during replication.
- It synthesizes the new DNA strand in the 5' → 3' direction, adding nucleotides to the 3' end of the growing chain.
- The DNA polymerase requires a primer, which provides the initial nucleotide for the polymerization process.
Correct Statement:
- DNA polymerase catalyzes polymerization in the 5' → 3' direction, not in the 3' → 5' direction.
- This means that the new DNA strand is synthesized in the 5' → 3' direction, while the template strand is read in the opposite 3' → 5' direction.
Overall:
- In DNA replication, the leading strand is synthesized continuously in the 5' → 3' direction, while the lagging strand is synthesized in short fragments called Okazaki fragments, also in the 5' → 3' direction.
- DNA polymerase catalyzes polymerization in the 5' → 3' direction, adding nucleotides to the growing chain.
- The incorrect statement is that DNA polymerase catalyzes polymerization in the 3' → 5' direction, which is not true.
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Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer?
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Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer?.
Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer?.
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Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Select the incorrect statement regarding DNA replicationa)Leading strand is formed in 5' → 3' directionb)Okazaki fragments are formed in 5' → 3' directionc)DNA polymerase catalyses polymerisation in 5' → 3' directiond)DNA polymerase catalyses polymerisation in 3' → 5' directionCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice NEET tests.
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