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 best describes how horse coat color is determined?

It is controlled by the interaction of multiple genes, each contributing to the final phenotype.

It is controlled by mitochondrial DNA inheritance.

It is solely influenced by environmental factors and not by genetics.

It is determined by a single gene with two alleles showing complete dominance.

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Verified step by step guidance

Understand that horse coat color is a classic example of a trait influenced by genetics, where multiple genes can interact to produce a variety of phenotypes.

Recall that mitochondrial DNA inheritance typically affects traits related to energy production and is passed maternally, but it does not usually determine coat color.

Recognize that environmental factors can influence some traits, but coat color in horses is primarily genetically determined rather than solely by the environment.

Consider the concept of single-gene inheritance with complete dominance, which would result in a limited number of phenotypes, unlike the diverse coat colors seen in horses.

Conclude that the best description is that horse coat color is controlled by the interaction of multiple genes, each contributing to the final phenotype, which explains the wide variety of coat colors observed.