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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.
At the end of the measurement period, which group will have produced the greatest volume of urine and which group the minimum? Describe your answer in details.
An open system in which the growth rate is maintained by adding a nutrient at the same rate as that medium containing micro-organisms is removed is called
If a plant that is 4n undergoes sympatric speciation by autopolyploidy, what will be its ploidy as a new species?
during the course of a neurosurgical procedure a drug is applied to the surface of the brain in order to inhibit the
The DNA genomes of which two cells will be the most similar.
Assume you have labeled a glucose molecule with a fluorescent marker so you can follow its path by the kidney. you observe your glucose molecule in renal artery and in the glomerular capsule.
explain how stem cells obtained from fertilization in the fallopian tube and somatic cell nuclear transfer differ in terms of the source of their genome, age of blastocyst.
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Which 6 cranial nerves involved in maintaining balance. List each nerve and describe how each contributes to the maintenance of balance.
e.m.s. went to bed about 11 pm after a busy evening of entertaining friends and family. he was awakened at 2 am with
q1. what is a protocell? how did they likely form and what can they do?give details each of these statements about
Calculate the standard free energy change for the conversion of D-glucose from alpha to beta form at 40 degrees C, if relative amount of alpha-glucose at this temperature is 36%. Please explain step-by-step.
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