Table of contents
- 1. Introduction to Genetics(0)
- 2. Mendel's Laws of Inheritance(0)
- 3. Extensions to Mendelian Inheritance(0)
- 4. Genetic Mapping and Linkage(0)
- 5. Genetics of Bacteria and Viruses(0)
- 6. Chromosomal Variation(0)
- 7. DNA and Chromosome Structure(0)
- 8. DNA Replication(0)
- 9. Mitosis and Meiosis(0)
- 10. Transcription(0)
- 11. Translation(0)
- 12. Gene Regulation in Prokaryotes(0)
- 13. Gene Regulation in Eukaryotes(0)
- 14. Genetic Control of Development(0)
- 15. Genomes and Genomics(0)
- 16. Transposable Elements(0)
- 17. Mutation, Repair, and Recombination(0)
- 18. Molecular Genetic Tools(0)
- 19. Cancer Genetics(0)
- 20. Quantitative Genetics(0)
- 21. Population Genetics(0)
- 22. Evolutionary Genetics(0)
3. Extensions to Mendelian Inheritance
Chi Square Analysis
3. Extensions to Mendelian Inheritance
Chi Square Analysis: Study with Video Lessons, Practice Problems & Examples
Back to all problems
16PRACTICE PROBLEM
The trait for round seed (R) is dominant over wrinkled peas (r), and yellow pea color (Y) is dominant over green (y). A dihybrid cross between two heterozygous pea plants is performed (RrYy x RrYy). The following phenotypic frequencies are observed:
800 round yellow peas; 241 round green peas; 220 wrinkled yellow peas; 66 wrinkled green peas. Based on the above results, the statistical value calculated by the chi-squared test is as follows:
The trait for round seed (R) is dominant over wrinkled peas (r), and yellow pea color (Y) is dominant over green (y). A dihybrid cross between two heterozygous pea plants is performed (RrYy x RrYy). The following phenotypic frequencies are observed:
800 round yellow peas; 241 round green peas; 220 wrinkled yellow peas; 66 wrinkled green peas. Based on the above results, the statistical value calculated by the chi-squared test is as follows: