Biology, 30.06.2019 10:00 karizm2010
Explain how a mutation causing resistance to pyrethrins and pyrethroids would spread through a population of bed bugs that are being treated with the pesticide. a) in a population of bed bugs, variation exists. some variation provides resistance to the pesticides. those bed bugs survive to reproduce, passing the resistance on to offspring. eliminate b) mutations happen randomly to change the gene pool of a population. the mutations are favored when a population of organisms winds up in an environment in which the mutations happen to be useful. c) when a population of insects, like bed bugs, is subjected to pesticides, some of the bed bugs alter their genetic make-up and they are able to survive. they then pass the new genes on to offspring. d) in any population of organisms, sexual reproduction provides for variation in the gene pool. such variation allows some insects to be resistant to pesticides. when sexual reproduction occurs again, the resistance is passed to offspring.
Answers: 1
Biology, 22.06.2019 01:00
What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.
Answers: 3
Biology, 22.06.2019 02:00
The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except
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Biology, 22.06.2019 04:30
Individuals do not compete directly for resources, but are prey for the same predator
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Biology, 22.06.2019 07:00
Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome
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Explain how a mutation causing resistance to pyrethrins and pyrethroids would spread through a popul...
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