Table of contents
- 1. Introduction to Genetics(66)
- 2. Mendel's Laws of Inheritance(333)
- 3. Extensions to Mendelian Inheritance(204)
- 4. Genetic Mapping and Linkage(147)
- 5. Genetics of Bacteria and Viruses(101)
- 6. Chromosomal Variation(106)
- 7. DNA and Chromosome Structure(129)
- 8. DNA Replication(69)
- 9. Mitosis and Meiosis(67)
- 10. Transcription(89)
- 11. Translation(150)
- 12. Gene Regulation in Prokaryotes(102)
- 13. Gene Regulation in Eukaryotes(124)
- 14. Genetic Control of Development(76)
- 15. Genomes and Genomics(138)
- 16. Transposable Elements(26)
- 17. Mutation, Repair, and Recombination(148)
- 18. Molecular Genetic Tools(146)
- 19. Cancer Genetics(62)
- 20. Quantitative Genetics(96)
- 21. Population Genetics(112)
- 22. Evolutionary Genetics(38)
20. Quantitative Genetics
Analyzing Trait Variance
20. Quantitative Genetics
Analyzing Trait Variance: Videos & Practice Problems
3PRACTICE PROBLEM
A plant's seed color is determined by two genes, A and B, each with two alleles. The A gene has three genotypes (AA, Aa, and aa) with phenotypic effects of 8, 6, and 4 units of color, respectively, and the B gene has similar effects. If seed color is determined by a threshold system, where at least 10 units of color are needed for purple seeds, what proportion of the F₂ progeny will be purple?
A plant's seed color is determined by two genes, A and B, each with two alleles. The A gene has three genotypes (AA, Aa, and aa) with phenotypic effects of 8, 6, and 4 units of color, respectively, and the B gene has similar effects. If seed color is determined by a threshold system, where at least 10 units of color are needed for purple seeds, what proportion of the F₂ progeny will be purple?