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The survival of viruses is a great example of natural selection and survival of the fittest. One such example is HIV. HIV reproduces very quickly (about 10 million new viruses per day. HIV lacks the proteins which repair mutations, and therefore there will be many mutations resulting from this rapid reproduction. The rapid rate of reproduction combined with the many different mutations has had a limiting effect on the effectiveness of HIV therapy using antibiotics. Without the mutations the virus would fall victim to antibiotics.
Are there other viruses which have proven difficult to treat because of mutations?
What viruses were very deadly and were eliminated because of the antibiotics?
In the tubular flowers of foxgloves, wild type coloration is red while a mutation called whit manufactures white flowers. Another mutation, called peloria, causes the flowers at the apex of the stem to be big.
Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America. What outcomes be able to occur where the ranges of two species overlap.
What would be the the flower colors of B_D_, B_dd, bbD_ and bbddgenotypes? In a cross of BBDD x bbdd, what would the F2 progeny phenotypicratios be?
The trait of wavy flowers in petunias is determined by the genetic condition PP' Plants with flat flowers are PP, while plants with curly flowers are P'P'. A cross is made between two plants each with wavy flowers. If they produce 200 seedlings, w..
Testing for Sugar in Beverages- You will write a formal scientific lab report based on your experiment - follow guidelines below. Write in complete, grammatically correct sentences. Readability will be evaluated for each section in addition to the..
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Which of the following describes allopatric speciation.
The sulfur reduction test is not able to differentiate H2S produced by anaerobic respiration and H2S produced by putrefaction. Is this inability the result of poor sensitivity or poor specificity of the test system?
q1is it possible economically socially environmentally to have zero emissions of pollutants? what level of risk are
On average, cells in the Allium root tip divided about once per day. Assuming this is true for the specimen you examined, use your calculations of relative duration to determine how much time, in minutes, Allium cells spend in each phase of mitosi..
Compare the control of gene regulation in eukaryotes and prokaryotes at the level of initiation of transcription.
ATP in nitrogen fixation: Which statement about a diet rich in amino acids is true?
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