If you wanted to see natural selection working in a population of mosquitoes in response to pesticide, how much pesticide should you use?
A) enough to kill most but not all the mosquitoes
B) enough to kill all the mosquitoes
C) just enough so that the mosquitoes will be exposed but not enough to kill any of them
D) enough to kill the weakest 1% of the mosquitoes
A
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Explain 2 functions of the bright coloration of some coral reef dwellers
What will be an ideal response?
Genetic recombination involves the use of ____ enzymes to cut out segments of DNA.
A. restriction endonuclease B. snurp C. ligase D. DNA polymerase
Which one of the following steps does NOT occur during multiplication of a picornavirus?
A) synthesis of + strands of RNA B) synthesis of - strands of RNA C) synthesis of viral proteins D) synthesis of DNA E) None of the answers is correct.
How do prions enter a host and cause disease?
a. Prions are carried by parasites that transmit the infectious prion particle through bites. b. Pathogenic prions promote the conversion of native prion proteins to cause disease. c. The host organism contains a gene that encodes for the same protein as the prion. d. Both b and c are correct.