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Application of an insecticide to control mosquito populations in malaria infested areas quickly resulted in a dominant mutation, R, resulting in insecticide resistance. However, the mutation also reduces the fertility of RR homozygotes. The fitness of different genotypes in areas where the insecticide is in use, are as follows:
rr (susceptible) 0.35Rr (resistant) 1.0RR (resistant) 0.85
What is the equilibrium frequency of the R allele in the population? Using the fitness values in the previous problem, and a starting frequency of 1% for the R allele, what is the expected frequency of the R allele after one generation in an environment where the insecticide is applied?
Each protofilament in a microtubule is assembled from subunits of alpha-tubulin and Beta-tubulin subunits. Please describe how the organization of the subunits contributes to the protofilament's polarity and differences between the two ends.
A population of collared lizards is fragmented into 3-glade populations through an aggressive anti-forest-fire campaign. At the "B" locus, there are only two alleles
A sample of butterflies contained 50 percent yellow-winged individuals and 50 percent black-winged individuals. In this species, wing color is determined by a single gene with two alleles.
Discuss and explain resting membrane potential and differentiate the concept of changes in polarity vs changes in concentration gradients.
It has been shown that the repair of UV induced dimers in a gene is coupled to transcription. Suggest a model for this and any experiments you would use to test your model.
Discuss how does the altered primary structure of hemoglobin from sickle cell patients affect its tertiary structure?
The cuckolded only benefits at the expense of cuckolded perhaps benefits are washed away by loss of paternity in his own nest.
Cromosome i from your mother and chromosome i from your father are and allel that is suppressed or hidden by the presence of another allele.
5-different mutations were derived from base pair substitutions at a single codon. In this codon, the mutant alleles had arginine, leucine.
Explain afterpains and why do these occur more commonly in mulips than in primips? Why do breastfeeding moms have more after pains? What you tell a mom to expect in terms of how long she will have to have afterpains?
Which of the following is true about DNA?
Determine which organelle found in plant cells is responsible for converting sunlight energy into the chemical energy found in sugar molecules?
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