Twenty hoki (sea fish) are translocated into an aquaculture facility for research. The hoki are genotyped at a single nucleotide polymorphism and the following genotype counts recorded: CC 1 CG 7 GG 12 1. What are the frequencies of the three genotypes? Show your working. 2. What is the allele frequency of the C allele? Show your working. 3. What is the observed heterozygosity?

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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OR: (b)
Twenty hoki (sea fish) are translocated into an aquaculture facility for research. The hoki are genotyped at a single nucleotide
polymorphism and the following genotype counts recorded:
CC 1
CG 7
GG 12
1. What are the frequencies of the three genotypes? Show your working.
2. What is the allele frequency of the C allele? Show your working.
3. What is the observed heterozygosity?
4. What is the expected heterozygosity? Show your working.
5. The population is bred for 2 generations, with 20 individuals kept each generation. What is the heterozygosity after the 2
generations, based on your expected heterozygosity value from (4)? Show your working.
6. What do you expect to happen to the heterozygosity over time, will it level off, increase or decrease? Why?
Transcribed Image Text:OR: (b) Twenty hoki (sea fish) are translocated into an aquaculture facility for research. The hoki are genotyped at a single nucleotide polymorphism and the following genotype counts recorded: CC 1 CG 7 GG 12 1. What are the frequencies of the three genotypes? Show your working. 2. What is the allele frequency of the C allele? Show your working. 3. What is the observed heterozygosity? 4. What is the expected heterozygosity? Show your working. 5. The population is bred for 2 generations, with 20 individuals kept each generation. What is the heterozygosity after the 2 generations, based on your expected heterozygosity value from (4)? Show your working. 6. What do you expect to happen to the heterozygosity over time, will it level off, increase or decrease? Why?
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