Biology, 28.06.2019 07:10 Jtblack2720
Below on the left is a diagram of double-stranded dna of a circular plasmid from a bacterial cell. the positions x, y, and z are sites where the plasmid dna is cleaved by restriction enzymes x, y, and z, respectively. the numbers are the size in kilobase pairs (kb) of the dna regions between the restriction sites. on the right is a diagram of an electrophoresis gel. lane 1 is the ladder, comprised of dna fragments that range in size from 1–12 kb showing the position of each band size after electrophoresis. the other lanes are dna bands observed from digestion of the plasmid with one of more of the restriction enzymes.
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In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20
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The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey
Answers: 2
Below on the left is a diagram of double-stranded dna of a circular plasmid from a bacterial cell. t...
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