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 traits is most strongly canalized?

Height in humans

Skin color in humans

Number of fingers in humans

Weight in humans

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Verified step by step guidance

Understand the concept of canalization: Canalization refers to the robustness of a phenotype against genetic or environmental variation, meaning a trait that shows little variation despite changes in genes or environment is highly canalized.

Consider each trait in terms of variability and genetic control: Height, skin color, and weight in humans show considerable variation influenced by both genetics and environment, indicating lower canalization.

Examine the number of fingers in humans: This trait is typically very consistent (usually five fingers per hand) across individuals, showing strong developmental stability and resistance to variation.

Conclude that the number of fingers is most strongly canalized because it is tightly regulated during development and rarely varies, unlike the other traits listed.

Summarize that traits with strong canalization maintain a stable phenotype despite genetic or environmental changes, and the number of fingers exemplifies this principle.