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

1. Introduction to Genetics

Fundamentals of Genetics

Genetics

1. Introduction to Genetics

Fundamentals of Genetics

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Multiple Choice

In the context of DNA, how many different sequences of eight bases can be formed using the four standard nucleotides (A, T, C, G)?

2^8

8^4

4^8

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Verified step by step guidance

Identify the number of possible nucleotides that can be used at each position in the DNA sequence. Since DNA is composed of four standard bases (A, T, C, G), there are 4 options for each base.

Determine the length of the DNA sequence, which is given as 8 bases.

Recognize that each position in the sequence can independently be any of the 4 nucleotides, so the total number of different sequences is calculated by raising the number of options per position to the power of the sequence length.

Write the formula for the total number of sequences as $4^{8}$, where 4 is the number of nucleotides and 8 is the sequence length.

Understand that this formula accounts for all possible combinations of the four nucleotides over the eight positions, resulting in the total number of different sequences.