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
- 19. Cancer Genetics29m
- 20. Quantitative Genetics1h 26m
- 21. Population Genetics50m
- 22. Evolutionary Genetics29m
2. Mendel's Laws of Inheritance
Pedigrees
7:28 minutes
Problem 1g
Textbook Question
Textbook QuestionMatch each statement (a–e) with the best answer from the following list: consultand, 50%, prior probability, 66.7%, obligate carrier, 100%.
The Mendelian risk that a person is a heterozygous carrier of a recessive condition
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Mendelian Inheritance
Mendelian inheritance refers to the principles of heredity established by Gregor Mendel, which describe how traits are passed from parents to offspring. It includes concepts such as dominant and recessive alleles, where a recessive condition manifests only when an individual has two copies of the recessive allele. Understanding these principles is crucial for determining carrier status and the likelihood of passing on genetic conditions.
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Carrier Status
A carrier is an individual who possesses one copy of a recessive allele for a genetic condition but does not exhibit symptoms of the condition themselves. In the context of recessive disorders, heterozygous carriers have a 50% chance of passing the recessive allele to their offspring. Recognizing carrier status is essential for assessing the risk of genetic conditions in families.
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Probability in Genetics
Probability in genetics involves calculating the likelihood of inheriting specific traits or conditions based on genetic information. For example, the prior probability of being a carrier for a recessive condition can be influenced by family history and population genetics. Understanding these probabilities helps in genetic counseling and risk assessment for individuals and families.
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