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
Mendel's Experiments and Laws
2:43 minutes
Problem 49d
Textbook Question
Textbook QuestionGo to the OMIM website (http://www.ncbi.nlm.nih.gov/omim) and locate the Search button at the top of the page. Use the Search function to look up, one by one, the following three human hereditary diseases that are relatively common in certain populations: 'Tay–Sachs disease' (select OMIM number 272800 from the search results list); 'cystic fibrosis' (select OMIM number 602421 from the search results list); and 'sickle cell anemia' (select OMIM 603903 from the search results list). For each of these diseases, look through the information and provide the following details:
On which chromosome is the gene for the disease located?
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Chromosomal Location
Chromosomal location refers to the specific position of a gene on a chromosome. Each human chromosome is numbered and contains numerous genes, which can be identified by their unique locations. Understanding where a gene is located is crucial for studying its function, inheritance patterns, and the implications of mutations associated with hereditary diseases.
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Chromosome Structure
Hereditary Diseases
Hereditary diseases are genetic disorders that are passed down from parents to offspring through genes. These diseases can result from mutations in a single gene or multiple genes and can vary in their expression and severity. Examples include Tay-Sachs disease, cystic fibrosis, and sickle cell anemia, each of which has distinct genetic causes and implications for affected individuals.
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Mendel's Laws
OMIM Database
The Online Mendelian Inheritance in Man (OMIM) database is a comprehensive resource that catalogs human genes and genetic disorders. It provides detailed information about the genetic basis of diseases, including chromosomal locations, inheritance patterns, and clinical features. Researchers and healthcare professionals use OMIM to access up-to-date information on genetic conditions, aiding in diagnosis and research.
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