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

2. Mendel's Laws of Inheritance

Pedigrees

Genetics

2. Mendel's Laws of Inheritance

Pedigrees

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Multiple Choice

Based on this pedigree, which mode of inheritance is most likely responsible for the observed pattern of affected individuals?

Mitochondrial

Autosomal recessive

X-linked recessive

Autosomal dominant

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Verified step by step guidance

Step 1: Examine the pedigree to identify the pattern of affected individuals across generations. Note whether the trait appears in every generation or skips generations.

Step 2: Consider the characteristics of each mode of inheritance: Mitochondrial inheritance is passed only from mothers to all offspring; autosomal recessive traits often skip generations and affect males and females equally; X-linked recessive traits typically affect mostly males and can skip generations.

Step 3: Check if affected individuals appear in every generation, which suggests a dominant mode of inheritance rather than recessive or mitochondrial.

Step 4: Verify if both males and females are affected roughly equally, which supports autosomal inheritance rather than X-linked inheritance.

Step 5: Conclude that since the trait appears in every generation and affects both sexes equally, the most likely mode of inheritance is autosomal dominant.