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

Variations of Dominance

Genetics

3. Extensions to Mendelian Inheritance

Variations of Dominance

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Multiple Choice

Blood types are an example of what type of dominance?

Complete dominance

Incomplete dominance

Codominance

Leaky dominance

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Verified step by step guidance

Understand the concept of dominance in genetics: Dominance refers to the relationship between alleles, where one allele can mask the expression of another in a heterozygous individual.

Review the types of dominance: Complete dominance occurs when the dominant allele completely masks the recessive one. Incomplete dominance results in a blend of traits. Codominance occurs when both alleles are fully expressed in the phenotype. Leaky dominance is not a standard term in classical genetics.

Identify the characteristics of blood types: Human blood types (A, B, AB, O) are determined by the presence or absence of antigens on the surface of red blood cells, specifically the A and B antigens.

Analyze how blood type alleles interact: The A and B alleles are codominant, meaning that if an individual inherits both alleles (genotype AB), both antigens are expressed, resulting in blood type AB.

Conclude that blood types are an example of codominance, as both alleles contribute equally and visibly to the phenotype without blending or masking each other.