Table of contents
- 1. Introduction to Genetics51m
- 2. Mendel's Laws of Inheritance3h 37m
- 3. Extensions to Mendelian Inheritance2h 41m
- 4. Genetic Mapping and Linkage2h 28m
- 5. Genetics of Bacteria and Viruses1h 21m
- 6. Chromosomal Variation1h 48m
- 7. DNA and Chromosome Structure56m
- 8. DNA Replication1h 10m
- 9. Mitosis and Meiosis1h 34m
- 10. Transcription1h 0m
- 11. Translation58m
- 12. Gene Regulation in Prokaryotes1h 19m
- 13. Gene Regulation in Eukaryotes44m
- 14. Genetic Control of Development44m
- 15. Genomes and Genomics1h 50m
- 16. Transposable Elements47m
- 17. Mutation, Repair, and Recombination1h 6m
- 18. Molecular Genetic Tools19m
- 19. Cancer Genetics29m
- 20. Quantitative Genetics1h 26m
- 21. Population Genetics50m
- 22. Evolutionary Genetics29m
21. Population Genetics
Hardy Weinberg
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In a random mating population of Drosophila, 5% of the flies have black bodies (encoded by recessive b) and 95% have brown bodies (encoded by B). Assuming Hardy-Weinberg equilibrium what is the genotypic frequency of BB in the population?
A
0.77
B
0.60
C
0.50
D
0.95

1
Identify the given information: 5% of the flies have black bodies, which is the recessive phenotype (bb). This means the frequency of the bb genotype is 0.05.
According to Hardy-Weinberg equilibrium, the frequency of the recessive genotype (bb) is represented by q^2. Therefore, q^2 = 0.05.
Calculate the allele frequency q by taking the square root of q^2: q = sqrt(0.05).
Determine the frequency of the dominant allele B, represented by p, using the equation p + q = 1. Solve for p: p = 1 - q.
Calculate the genotypic frequency of BB using the equation p^2, where p is the frequency of the dominant allele B.
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Multiple Choice
In a population at Hardy-Weinberg equilibrium, if the frequency of the g allele is 0.6, what percentage of all alleles in the population are g?
2
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