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Three alleles are found at a locus coding for malate dehydrogenase (MDH) in the spotted chorus frog. Chorus frogs were collected from a breeding pond, and each frog's genotype at the MDH locus was determined with electrophoresis. The following numbers were found: M1/M1 8 M1/M2 35 M2/M2 20 M1/M3 53 M2/M3 76 M3/M3 62 Total 254 a) Calculate the frequencies of the M1, M2, and M3 alleles in this population. b) Using a chi-square test, determine whether the MDH genotypes in this population are in Hardy-Weinberg proportions.
Assume you have 10m^3 of air with density of 1.024 kg/m^3. If Carbon Dioxide is present at 360 ppmv, what is the mass of CO2 in grams?
What is the possibility that the son would have both the Xg antigen and ichthyosis. Why is the man a major candidate for a heart attack.
You have an F- strain of E. coli that is resistant to streptomycin but requires the following amino acids for growth on minimal medium: arginine, cysteine, methionine, phenylalanine, and proline.
Insulin is a secreted protein made by islet cells in the pancreas. The gene INS encodes the precursor for insulin protein. Explain the flow of data from the INS gene.
Thalassemia is an inherited anemic disorder in humans. Affected individuals exhibits either a minor anemia or a major anemia.
Assume that you isolated Staphylococcus aureus from your skin. How would you determine whether it is penicillin-resistance?
Determine the events that mark the starting and the end of the first interphase period? What happens within the cell in this period?
Represent graphically the relation between melting temperature and the G-C content of DNA. Construct relations for dependence of melting temperature of a 30 bp DNA duplex on the G-C content.
Suppose that the each replication fork moves at a rate of 500 base pairs per second, how long would it take to replicate the E. coli chromosome from a single origin of replication?
Suppose you could selectively prevent production of a-amylase or oligo-1,6-glucosidase in an organism that normally hydrolyzes starch. Which enzyme would the organism miss the most?
The signaling mechanisms used by a steroid-hormone receptor and by an ion channel linked receptor have very few components. Can either mechanism lead to an amplification of the initial signal? If so, how? Ideas are included.describe an amplificati..
Glucose (C6H12O6) can survive as both an open-chain form and a closed-ring form. Before 1900, glucose was only thought to happen as an open chain. Now we know that over 99 percent of the time, glucose occurs in the closed-ring form. What probable dif..
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