- 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)
Analyzing Trait Variance: Videos & Practice Problems
Suppose flower color in a certain plant species is controlled by three independently assorting genes, designated R, G, and B. Each gene has two alleles, and the dominant allele produces a pigment that contributes to the final flower color. The possible alleles and their effects on flower color are as follows:
R produces red pigment, r produces no red pigment
G produces green pigment, g produces no green pigment
B produces blue pigment, b produces no blue pigment
The flower color is determined by the combination of these pigments. If a flower has red and green pigments, it appears yellow. If a flower has blue and green pigments, it appears cyan. If a flower has red and blue pigments, it appears magenta. If a flower has all three pigments, it appears white. If a flower has all recessive alleles then the color of the flower is black.
Identify the genotypes that will produce a white flower.
Suppose flower color in a certain plant species is controlled by three independently assorting genes, designated R, G, and B. Each gene has two alleles, and the dominant allele produces a pigment that contributes to the final flower color. The possible alleles and their effects on flower color are as follows:
R produces red pigment, r produces no red pigment
G produces green pigment, g produces no green pigment
B produces blue pigment, b produces no blue pigment
The flower color is determined by the combination of these pigments. If a flower has red and green pigments, it appears yellow. If a flower has blue and green pigments, it appears cyan. If a flower has red and blue pigments, it appears magenta. If a flower has all three pigments, it appears white. If a flower has all recessive alleles then the color of the flower is black.
Identify the genotypes that will produce a white flower.