Type evolutionary event has occurred-population of anopheles

Assignment Help Biology
Reference no: EM13527311

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.

Reference no: EM13527311

Questions Cloud

Find the angle of the road bed required to land : In the movie, "SPEED" one of the action events required volunteer bus driver, Sandra Bullock, to jump a 50 foot (15.25m) gap in a newly constructed freeway overpass. Determine the angle of the road bed required to land on the far side safely
How are dividends and dividends payable reported : Prepare the entries, if any, on each of the three dividend dates and how are dividends and dividends payable reported in the financial statements prepared at December 31?
Calculate the potential energy of the electron : Three identical point charges (q1=q2=q3=5.0 nc) are located at three corners of a square with 1.0 cm each side, find the potential energy U of the electron
Hydrogenate a acid and remove the carbon-carbon double bond : Examine the following acid (H atoms are omitted from the structure): C-C-C=C-C-C-C=C-C-C-COOH. How many more hydrogen atoms would have to be added in order to fully hydrogenate this acid and remove the carbon-carbon double bonds
Type evolutionary event has occurred-population of anopheles : 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 ..
Obtain what would be the true weight of the satellite : A satellite has a mass of 6043 kg and is in a circular orbit 4.60 × 105 m above the surface of a planet. The period of the orbit is 2.2 hours. What would be the true weight of the satellite
Excess of par value-preferred stock : Classify each account using the table headings - Excess of Par Value-Preferred Stock
What distance does the spring need to be compressed : A block with mass m = 16.0 kg rests on a frictionless table, What distance does the spring need to be compressed so that the block will just barely make it past the rough patch when released
Prepare a retained earnings statement for the year : Prepare a retained earnings statement for the year - Castle Corporation had retained earnings of $550,000. During the year, Castle had the following selected transactions.

Reviews

Write a Review

 

Biology Questions & Answers

  Major entryway of carbon into the food chain

Estimate the major entryway of carbon into the food chain and what is major process that "fixes" carbon into biomass?

  Estimate relative activity of the original sample

Assayed for LDH activity were five uL of a sample that was diluted 6 to 1. The activity in the reaction vessel, which has a volume of 1 mL, is 0.10 U.

  What is the likely phenotypic ratio of their offspring

How various ATP equivalents are required to synthesize de novo one molecule of IMP, starting from ribose-5-phosphate? Presume that all required precursors in the pathway are present.

  Q explain the sequence of steps by which an action

q. explain the sequence of steps by which an action potential propagates without loss. illustrate a diagram of an axon

  What is the part of the integumentary system

How does the increase in estrogen level correspond to the thickness of uterine lining (endometrium)? Clarify why this makes sense based on the function of estrogen.

  Is erythromycin naturally produced by a fungus

What part (or chemical aspect) of the bacteria will be altered when erythromycin is used?

  Why would glomerular inflammation result in these substances

The presence of blood and protein in the urine can indicate the inflammation of the glomerulus. Why would glomerular inflammation result in these substances passing into filtrate and the urine?

  Why are additional shots needed

Why doesn't flu shots,or any other vaccination, provide protection to a person forever. Why are additional shots needed?

  Which of the following conditions will the lac operon

Under which of the following conditions will the lac operon be expressed at the highest level?

  How many cells does the average human have

Identify the different phases and stages of the mitotic cell cycle.Explain the mitigating factors for transition from one phase and stage to the next phase and stage?

  What are the components of a dna nucleotide

What are the components of a DNA nucleotide? Why was it that knowing the composition of DNA led most scientists to the mistaken belief that DNA could not be the genetic material?

  What is the good range for a heartbeat stroke work

What is the most possible explanation for how these proteins find their way to the mitochondria. What is the good range for a heartbeat stroke work in an anaesthetised sheep? Before and after the venous administration of adrenaline.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd