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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

Describe the structure and complementary base pairing of DNA.

When Chargaff was performing his experiments, the tetranucleotide hypothesis, which stated that DNA was composed of GACT nucleotide repeats, was the most widely accepted view of DNA鈥檚 composition. How did Chargaff disprove this hypothesis?

A scientist creates fruit fly larvae with a mutation that eliminates the exonuclease function of DNA pol III. Which prediction about the mutational load in the adult fruit flies is most likely to be correct?

a. The adults with the DNA pol III mutation will have significantly more mutations than average.

b. The adults with the DNA pol III mutation will have slightly more mutations than average.

c. The adults with the DNA pol III mutation will have the same number of mutations as average.

d. The adults with the DNA pol III mutation will have fewer mutations than average.

Explain the events taking place at the replication fork. If the gene for helicase is mutated, what part of replication will be affected?

What are Okazaki fragments and how they are formed?
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