Genetics Lab. Quiz #7
Due: April 30, 2010
Presented below are the results of the PTC taster phenotype and TS2R38 genotype
analysis for the 2010 Genetics students at Montana State University-Billings.
Phenotype
Number
Genotype
Number
Taster
23
TT
6
Nontaster
9
Tt
10
tt
8
1. Estimate the number of heterozygous individuals in the Genetics class. You may
assume you are a population at genetic equilibrium. Show your work.
2. Calculate the observed genotype frequencies for the above population. Record the
values above. Show your work.
3. Calculate the frequency of the “T” allele and the frequency of the “t“ allele for the
above population. Show your work.
4. Predict the genotype frequencies for this population, assuming that it is at genetic
equilibrium. Record the values in the table above. Show your work.
5. What is your TS2R38 genotype? (if your PCR, did not work, identify the genotype in
lane 5 of the morning section’s gel)
Shown below is the number of differences between NADH gene sequences of three
primate species.
Chimp and Vervet:
Chimp and Bonobo:
Bonobo and Vervet:
190
44
196
Construct a distance matrix for these three species.
Construct a phylogenetic tree for these three species.
Following the evolutionary split of Chimp and Bonobo, how many mutations occurred in
the Chimp NADH gene?