Question

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

Option b is correct.

Step-by-step solution

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.

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.

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.