Biology

Biology, 25.07.2019 12:30, yanaalbury

How might mutations introduce variation into a population

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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.

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Biology, 15.07.2019 15:00, cindyc1103

What would happen if there were no germ-line mutations or genetic recombination possible in a population? (2 points) genetic variation would have to come from random events. only alternate generations would express any genetic variation. body cell mutations would be the only source of heritable genetic variation. there would be no new heritable genetic variation possible in the population.

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Biology, 24.07.2019 13:30, ahmedeldyame

Consider the model for natural selection. in a population of living things, genetic variation exists. one source of variation is mutation. which scenario listed here could be a mutation that causes members of a population to die out? a) in a population of fast-running cheetahs, some are born that run slower than most. b) in a population of sunflowers, mutations cause some flower heads to produce more seeds. c) in a population of brownish rabbits that live in the tundra, some are born with fur that turns white in the winter. d) in a populations of birds, mutations result in different beak sizes so the birds do not compete for food in t

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Biology, 07.11.2019 10:31, prettybaby406

Due soon need what would happen if there were no germ-line mutations or genetic recombination possible in a population? genetic variation would have to come from random events. only alternate generations would express any genetic variation. body cell mutations would be the only source of heritable genetic variation. there would be no new heritable genetic variation possible in the population

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