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Chapter 14: Q. 9 (page 367)

Meselson and Stahl's experiments proved that DNA replicates by which mode? a. conservative b. semi-conservative c. dispersive d. none of the above

Short Answer

Expert verified

Option b is correct.

Step by step solution

01

Step 1. Introduction

DNA replication refers to the process by which an organism makes a copy of its DNA and passed it on to daughter cells. Replication occurs before the cell division to ensure both cells receive exact copies of the genetic material of the parents.

02

Step 2. Explanation of the correct option

Option b is correct because DNA replication is bi-directional and has multiple Ori or origins of replication. it uses a semiconservative method for replication means double-stranded DNA with one parental strand and a new daughter strand.

03

Step 3. Explanation of the incorrect options

Option a is incorrect because DNA replication is semiconservative in nature instead of conservative.

Option c is incorrect because DNA replication is semiconservative in nature instead of dispersive.

Option d is incorrect because DNA replication is semiconservative in nature.

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Most popular questions from this chapter

Prokaryotes have a single circular chromosome while eukaryotes have linear chromosomes. Describe one advantage and one disadvantage to the eukaryotic genome packaging compared to the prokaryotes.

Describe the structure and complementary base pairing of DNA.

In eukaryotes, what is the DNA wrapped around? a. single-stranded binding proteins b. sliding clamp c. polymerase d. histones

How do the linear chromosomes in eukaryotes ensure that its ends are replicated completely?

Imagine the Meselson and Stahl experiments had supported conservative replication instead of semiconservative replication. What results would you predict to observe after two rounds of replication? Be specific regarding per cent distributions of DNA incorporating 15N and 14N in the gradient.
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