Table of contents

1. Introduction to Genetics51m
2. Mendel's Laws of Inheritance3h 37m
3. Extensions to Mendelian Inheritance2h 41m
4. Genetic Mapping and Linkage2h 28m
5. Genetics of Bacteria and Viruses1h 21m
6. Chromosomal Variation1h 48m
7. DNA and Chromosome Structure56m
8. DNA Replication1h 10m
9. Mitosis and Meiosis1h 34m
10. Transcription1h 0m
11. Translation58m
12. Gene Regulation in Prokaryotes1h 19m
13. Gene Regulation in Eukaryotes44m
14. Genetic Control of Development44m
15. Genomes and Genomics1h 50m
16. Transposable Elements47m
17. Mutation, Repair, and Recombination1h 6m
18. Molecular Genetic Tools19m
- Genetic Cloning
  9m
- Methods for Analyzing DNA
  9m
19. Cancer Genetics29m
- Overview of Cancer
  21m
- Cancer Mutations
  7m
20. Quantitative Genetics1h 26m
21. Population Genetics50m
- Hardy Weinberg
  19m
- Allelic Frequency Changes
  31m
22. Evolutionary Genetics29m

7. DNA and Chromosome Structure

DNA Structure

Genetics

7. DNA and Chromosome Structure

DNA Structure

Previous problemNext problem

2:47 minutes

Problem 9c

Textbook Question

Consider the sequence 3'-ACGCTACGTC-5'.
What is the total number of noncovalent bonds joining the nucleotides of the complementary strands?

Verified step by step guidance

Step 1: Understand the problem. The sequence provided is 3'-ACGCTACGTC-5'. To determine the total number of noncovalent bonds, we need to identify the complementary strand and count the hydrogen bonds between the base pairs.

Step 2: Recall the base pairing rules in DNA. Adenine (A) pairs with Thymine (T) via 2 hydrogen bonds, and Cytosine (C) pairs with Guanine (G) via 3 hydrogen bonds.

Step 3: Write the complementary strand for the given sequence. The complementary strand will be 5'-TGCGATGCAG-3', as each base pairs with its complement.

Step 4: Count the hydrogen bonds for each base pair. For example, A-T pairs contribute 2 hydrogen bonds, and C-G pairs contribute 3 hydrogen bonds. Sum the hydrogen bonds for all base pairs in the sequence.

Step 5: Add the total number of hydrogen bonds from all base pairs to determine the total number of noncovalent bonds joining the nucleotides of the complementary strands.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Video duration:

Play a video:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Base Pairing

Base pairing refers to the specific hydrogen bonding between nucleotide bases in DNA. Adenine pairs with thymine (A-T) through two hydrogen bonds, while cytosine pairs with guanine (C-G) through three hydrogen bonds. Understanding base pairing is essential for determining the number of noncovalent bonds in complementary strands.

Nucleotide Structure

Nucleotides are the building blocks of DNA and consist of a phosphate group, a sugar (deoxyribose in DNA), and a nitrogenous base. The sequence of these nucleotides encodes genetic information. Recognizing the structure of nucleotides helps in identifying how they interact and bond with complementary nucleotides.

Complementary Strands

Complementary strands in DNA refer to the two strands that run in opposite directions and are held together by hydrogen bonds between their base pairs. Each nucleotide on one strand pairs with a specific nucleotide on the opposite strand, which is crucial for the stability of the DNA double helix and for processes like replication and transcription.

Watch next

Master DNA Structure with a bite sized video explanation from Kylia

Start learning

Related Videos

Related Practice

Textbook Question

The following figure (Figure 1.6) presents simplified depictions of nucleotides containing deoxyribose, a nucleotide base, and a phosphate group. Use this simplified method of representation to illustrate the sequence 3'-AGTCGAT-5' and its complementary partner in a DNA duplex.

How many hydrogen bonds are present in this DNA duplex?

417

views

Textbook Question

How many phosphodiester bonds are present in this DNA duplex?

353

views

Textbook Question

What kind of bonds join the C in one strand to the G in the complementary strand?

411

views

Textbook Question

What kind of bond joins the C to G within a single strand?

363

views

Textbook Question

Consider the sequence 3'-ACGCTACGTC-5'.

What is the total number of covalent bonds joining the nucleotides in each strand?

831

views

Textbook Question

Consider the sequence 3'-ACGCTACGTC-5'.

What is the double-stranded sequence?

608

views

Textbook Question

Draw the chemical structure of the three components of a nucleotide, and then link the three together. What atoms are removed from the structures when the linkages are formed?

732

views

Textbook Question

How are the carbon and nitrogen atoms of the sugars, purines, and pyrimidines numbered?

623

views

Show more practices