Okay. So now, I have made this pedigree flowchart, and I want to walk you through it because I think it's going to be helpful. So often, you're going to get a pedigree on a test or quiz, and you're going to ask, "What type of inheritance pattern is this?" Now, I have given you some ways to figure this out, but that can be really difficult to memorize and answer in a test or quiz, not a quest. Even though it can sometimes feel like a quest to get that grade. So, I made this flowchart, and you can just answer these questions about the pedigree you're seeing, and it'll lead you to the appropriate inheritance. So the first question it says, "Do all affected individuals have an affected parent? Yes or no?" If it's yes, you go on to answer this question. If it's no, you go on to answer this question. And you repeat this. So here, we'll follow this one. "Does this trait affect mostly males? Yes or no?" If no, it's autosomal recessive. If yes, you answer this. And the same thing over here. "Do all affected males have an affected mother? Yes or no?" Yes. "Does the affected father produce daughters who are all affected?" Yes. And you keep answering these questions, and eventually, you will get to your answer, what type of pedigree is this? So I suggest, if you have some problems in the back of the book, or if you are studying for a quiz, or a test, or even just pedigrees that you may see in your textbook, or even the pedigrees that I showed you above, just take one and walk through this pedigree flowchart and see if you can figure out what sort of inheritance it is. And that way, if you can't really remember all the individual characteristics of each pedigree, if you can remember this flowchart, then that will really help you get those questions right and understand how to look at a pedigree and know which inheritance pattern it is. So hopefully this flowchart will help you, but with that, let's now move on.
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
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