Table of contents

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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

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Multiple Choice

Which of the following is NOT true regarding the structure of the DNA double helix?

The two strands run parallel

The two strands are complementary

The nucleotides are held together via Phosphodiester bonds

There is a major groove and minor groove

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Verified step by step guidance

Understand the basic structure of DNA: DNA is a double helix composed of two strands that are twisted around each other.

Recognize that the two strands of DNA run in opposite directions, which is referred to as being 'antiparallel'. This means one strand runs 5' to 3' and the other runs 3' to 5'.

Identify that the strands are complementary, meaning that the bases on one strand pair with specific bases on the other strand (A with T, and C with G).

Know that nucleotides within each strand are connected by phosphodiester bonds, which link the sugar of one nucleotide to the phosphate group of the next.

Understand the concept of major and minor grooves: The twisting of the DNA strands creates two types of grooves, major and minor, which are important for protein binding and DNA interactions.