- 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)
Crossing Over and Recombinants: Study with Video Lessons, Practice Problems & Examples
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In a genetic study of peas, a researcher is interested in two traits: seed color (yellow is dominant to green) and seed shape (round is dominant to wrinkled). The researcher starts with two pure-breeding pea plants: one with yellow, round seeds (YYRR) and the other with green, wrinkled seeds (yyrr). The researcher performs a dihybrid cross between the two plants and obtains F₁ progeny that are all yellow and round (YyRr).
The researcher then crosses the F₁ progeny to a pure-breeding pea plant with green, wrinkled seeds (yyrr) and obtains the following F₂ progeny:
Phenotype Number
Yellow, round 183
Yellow, wrinkled 20
Green, round 5
Green, wrinkled 192
Total 400
Considering the given data, the recombination frequency between the gene for seed color and the gene for seed shape is:
In a genetic study of peas, a researcher is interested in two traits: seed color (yellow is dominant to green) and seed shape (round is dominant to wrinkled). The researcher starts with two pure-breeding pea plants: one with yellow, round seeds (YYRR) and the other with green, wrinkled seeds (yyrr). The researcher performs a dihybrid cross between the two plants and obtains F₁ progeny that are all yellow and round (YyRr).
The researcher then crosses the F₁ progeny to a pure-breeding pea plant with green, wrinkled seeds (yyrr) and obtains the following F₂ progeny:
Phenotype Number
Yellow, round 183
Yellow, wrinkled 20
Green, round 5
Green, wrinkled 192
Total 400
Considering the given data, the recombination frequency between the gene for seed color and the gene for seed shape is: