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

11. Translation

The Genetic Code

Genetics

11. Translation

The Genetic Code

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Multiple Choice

In the context of the genetic code, which base always base pairs with guanine?

Adenine

Uracil

Thymine

Cytosine

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Verified step by step guidance

Recall the principle of complementary base pairing in nucleic acids, which states that specific nitrogenous bases pair with each other through hydrogen bonds.

In DNA, guanine (G) always pairs with cytosine (C) via three hydrogen bonds, ensuring stability in the DNA double helix.

In RNA, guanine also pairs with cytosine, maintaining the same complementary relationship as in DNA.

Adenine (A) pairs with thymine (T) in DNA and with uracil (U) in RNA, so these bases do not pair with guanine.

Therefore, the base that always pairs with guanine is cytosine.