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A population of Anopheles mosquitoes reaches very high densities, and is subjected to aerial spraying by DDT. The following six years, the mosquitoes are not observed at all, but the population was sprayed “just in case”. An outbreak occurs sevem years later,however, and this time, the aerial spraying with DDT is much less effective. Laboratory tests indicate that these mosquitoes are resistant to DDT, avoiding surfaces coated with it. It also seems that they have a reduced growth rate and lower fertility than mosquitoes from previous years. Field ecologists report that virtually every predatory insect has been eliminated from the regions sprayed with DDT.
a. What type of evolutionary event has occurred here? What was the likely mechanism for the change in the mosquito population?b. What recommendations would you make as a mosquito control strategy for the future.
Cystic fibrosis is inherited with autosomal recessive allele individuals with autosomal dominant allele do not have the disease.
energy absorbed from photon causes transfer of excited electrons from accessory pigments to chlorophyll reaction centers.
The habitat of one species of tropical fish is red coral reefs. The large majority of the fish in this population are red. A few individual fish carry a mutation that prevents the production of the red pigment.
RNA was extracted from plasma cells (PC) of wildtype (WT) mice and plasma cells (PC) from mice expressing a Myc short hairpin RNA.
Glycogen stored in muscles can be mobilized to supply metabolic energy by hydrolyzing individual glucose subunits from the polymer.
Describe how structural modification helped the plant adapt to its environment. Assure the plant you select is an Angiosperm. For example, plants like the mosses, pine trees, and ferns are not the Angiosperms.
What is ETR1?does it resemble any other gene? Explain the structure of ETR1? What are its sub family and how is it involved in Ethylene Signalling? What phenotypes are shown by the different sub family mutant plants?
A junior high school student live sonly on potato chips and cola. Given that this is not a balanced diet, what effects would this have on the general health of the student? Devise a program of nutrition that would restore the student back to healt..
Explain the probability that the first child of parents who are heterozygous for both traits will show the achondroplasia however not the Huntington's disorder?
Suppose that one hundred percent efficiency of energy conservation, how many moles of ATP can be synthesized under standard conditions by the complete oxidation of 1 mol of palmitate?
What characteristics are sed to classify viruses into familes.
Let's assume for this problem that the world is divided into blue-eyed people and brown-eyed people. Let's also assume for the sake of simplicity that there is only one gene responsible for eye color and that the allele for brown eyes.
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