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

3. Extensions to Mendelian Inheritance

Overview of interacting Genes

Genetics

3. Extensions to Mendelian Inheritance

Overview of interacting Genes

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Multiple Choice

Which of the following statements about the assumptions of cladistics is stated incorrectly?

Changes in characteristics occur over time within lineages.

All groups of organisms are related by descent from a common ancestor.

Genetic traits always evolve independently and never interact with each other.

Some traits are shared due to common ancestry rather than convergent evolution.

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Verified step by step guidance

Step 1: Understand the basic assumptions of cladistics, which is a method used to reconstruct evolutionary relationships based on shared derived characteristics.

Step 2: Review each statement carefully to determine if it aligns with cladistic principles: (a) Changes in characteristics occur over time within lineages — this is true as evolution causes traits to change over time.

Step 3: (b) All groups of organisms are related by descent from a common ancestor — this is a fundamental assumption of cladistics, reflecting the tree-like pattern of evolution.

Step 4: (c) Genetic traits always evolve independently and never interact with each other — this is incorrect because traits can be linked genetically or influenced by epistasis, meaning they do not always evolve independently.

Step 5: (d) Some traits are shared due to common ancestry rather than convergent evolution — this is true and important for distinguishing homologous traits from analogous traits in cladistics.