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DNA Replication 2 : Continuous Synthesis Video Lecture - NEET

FAQs on DNA Replication 2 : Continuous Synthesis Video Lecture - NEET

1. What is DNA replication?

Ans. DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. It is a fundamental process in all living organisms and is essential for cell division and genetic inheritance.

2. What is the significance of continuous synthesis in DNA replication?

Ans. Continuous synthesis refers to the uninterrupted replication of the leading strand during DNA replication. This process allows for efficient and rapid copying of the DNA molecule, ensuring accurate transmission of genetic information. Without continuous synthesis, the replication process would be slower and more prone to errors.

3. How does continuous synthesis differ from discontinuous synthesis in DNA replication?

Ans. Continuous synthesis and discontinuous synthesis are two different mechanisms involved in DNA replication. Continuous synthesis occurs on the leading strand, where DNA polymerase synthesizes a new complementary strand continuously, following the replication fork. Discontinuous synthesis occurs on the lagging strand, where DNA polymerase synthesizes short fragments called Okazaki fragments, which are later connected by an enzyme called DNA ligase.

4. What is the role of DNA polymerase in continuous synthesis during DNA replication?

Ans. DNA polymerase is the enzyme responsible for synthesizing new DNA strands during replication. In continuous synthesis, DNA polymerase continuously adds nucleotides in the 5' to 3' direction, using the parental DNA strand as a template. It plays a crucial role in ensuring the accurate and efficient replication of the DNA molecule.

5. What are the consequences of errors in continuous synthesis during DNA replication?

Ans. Errors or mutations in continuous synthesis can lead to genetic variations and potentially have detrimental effects on an organism. These errors can result in changes in the DNA sequence, leading to the production of non-functional or malfunctioning proteins. In some cases, mutations can also be beneficial and contribute to genetic diversity and evolution.

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