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)
4. Genetic Mapping and Linkage
Crossing Over and Recombinants
4. Genetic Mapping and Linkage
Crossing Over and Recombinants: Study with Video Lessons, Practice Problems & Examples
Back to all problems
4PRACTICE PROBLEM
In experiments published in 1933, Barbara McClintock studied potential genetic linkage in corn (Zea mays) for genes controlling kernel color (colored is dominant to colorless) and endosperm composition (starchy is dominant to sugary). McClintock performed two crosses. In the first cross, pure-breeding colored (CC), starchy-kernel (SS) plants were crossed to plants pure-breeding for colorless (cc), sugary (ss) kernels. The F₁ of this cross were test-crossed to colorless (cc), and sugary (ss) plants. The test-cross progeny were as follows:
Phenotype Number
Colored, starchy 731
Colorless, sugary 714
Colored, sugary 28
Colorless, starchy 9
Total 1482
Considering the given data, which of the following statements is therefore true?
In experiments published in 1933, Barbara McClintock studied potential genetic linkage in corn (Zea mays) for genes controlling kernel color (colored is dominant to colorless) and endosperm composition (starchy is dominant to sugary). McClintock performed two crosses. In the first cross, pure-breeding colored (CC), starchy-kernel (SS) plants were crossed to plants pure-breeding for colorless (cc), sugary (ss) kernels. The F₁ of this cross were test-crossed to colorless (cc), and sugary (ss) plants. The test-cross progeny were as follows:
Phenotype Number
Colored, starchy 731
Colorless, sugary 714
Colored, sugary 28
Colorless, starchy 9
Total 1482
Considering the given data, which of the following statements is therefore true?