Question

DNA replication is said to be semiconservative because a. each new DNA molecule contains one new strand and one old one. b. every other new DNA molecule contains two old strands. c. each new DNA strand contains two new strands. d. every other new DNA molecule contains one new strand and one old one.

Name: Problem 4, Chapter 11: Essentials of Biology
Uploaded: 2021-03-13T18:37:56-08:00
Duration: 1 min 41 s
Channel: Jeremy Spiro-Winn
Description: DNA replication is said to be semiconservative because a. each new DNA molecule contains one new strand and one old one. b. every other new DNA molecule contains two old strands. c. each new DNA strand contains two new strands. d. every other new DNA molecule contains one new strand and one old one.

   DNA replication is said to be semiconservative because
a. each new DNA molecule contains one new strand and one old one.
b. every other new DNA molecule contains two old strands.
c. each new DNA strand contains two new strands.
d. every other new DNA molecule contains one new strand and one old one.

Essentials of Biology

Sylvia S. Mader,… 5th Edition

Chapter 11, Problem 4

Instant Answer

Solved by Expert Jeremy Spiro-Winn

03/13/2021

Step 1

For simplicity, let's assume this section is made up of all adenines (A) on one side and all thymines (T) on the other side. We know that in DNA, adenine always pairs with thymine. Show more…

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DNA replication is said to be semiconservative because a. each new DNA molecule contains one new strand and one old one. b. every other new DNA molecule contains two old strands. c. each new DNA strand contains two new strands. d. every other new DNA molecule contains one new strand and one old one.

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Key Concepts

DNA Replication

DNA replication is the biological process where a cell makes an exact copy of its DNA, ensuring that genetic information is passed to daughter cells. This involves the unwinding of the double helix, and the synthesis of new complementary strands through the base-pairing rules, allowing for faithful transmission of genetic material during cell division.

Semiconservative Model

The semiconservative model of DNA replication describes the mechanism by which each newly synthesized DNA molecule retains one old (parental) strand and incorporates one new strand. This model explains how genetic continuity is maintained while allowing for a mechanism of evolution and mutation, as each daughter molecule is a combination of the old and newly synthesized strands.

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