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The ß-hemoglobin locus in humans is implicated in resistance to falciparum malaria. Estimates of fitness vary geographically, but suppose that, in one particular area with endemic malaria, the relative fitnesses of genotypes involving the alleles A ("normal"), S (sickle) and C are:
genotype AA SS CC AS AC SC
rel fit 0.82 0.15 1.20 1.00 0.82 0.55
If in the population the frequencies of the three alleles are (i) pA=0.9000, pS=0.0500 and pC=0.0500 or (ii) pA=0.6000, pS=0.2000 and pC=0.2000, what would be the frequencies in the next generation? (Assume that the generations are separate and maintain 4 decimal places throughout your calculation). What do these results suggest about the final outcome of selection given these two different starting conditions (i and ii)?
You have been injected into the femoral vein? What is the path from the right femoral vein to the lower lobe of the right lung? What is the path that I would take from the right femorla vein to the lower lobe of the right lung via right pulmonary art..
Their water vascular system with tube feet is unique. Sea lilies (Crinoids) might be closest to the ancestral echinoderm. Other groups are modified from this. Chordates -An interesting sidelight: Which side is up.
How does your answer make clear that why antibiotic resistance evolves so fast. What is the equilibrium frequency of the resistant allele in the absence of methicillin.
At a talk by a visiting scientist, you learn about a strain of bakers' yeast that contains a mutation called gal1- in its galactokinase gene. Because this gene is needed to metabolize galactose, the mutant strain cannot grow in galactose medium.
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What genotypic frequencies are expected at birth in the next generation. How much change has there been in the frequency of the B allele.
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Offer a model to explain how the F-box protein SLF and the S-RNase mediate self incompatibility. Be sure to account for the action of these proteins in compatible and incompatible interactions.
A color-blind woman marries a man with the normal color vision. They have ten children, six boys and four girls. How many have normal vision? How many are color- blind?
How will a scientist predict the relative frequencies
Describe why it may matter if the county had dry areas, swampy areas, forests, and meadows all within its boundaries. As a doctor, which of the statements are important factors for you to consider as you decide whether or not to remove the patient's ..
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