Biology, 24.03.2021 08:30 deniseelyons15
Overfishing of salmon has caused populations of wild salmon to decline. To combat this decline, salmon are raised in hatcheries, and then released to the wild. However, researchers have found that hatchery-raised salmon have reduced reproductive success in the wild, compared to wild salmon. They have also identified many genetic differences between hatchery-raised and wild salmon.
Which statement describes the most likely reason for the differences between hatchery-raised and wild salmon?
A.
Hatchery-raised salmon have evolved to have completely different genomes from those of wild salmon.
B.
Hatchery-raised salmon develop into stronger swimmers than those raised in the wild.
C.
The pressures of a hatchery environment and of the wild environment select for different traits.
D.
The pressures of a hatchery environment promote convergent evolution between hatchery-raised and wild salmon.
Answers: 3
Biology, 22.06.2019 00:10, rameseshajj
Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase
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Biology, 22.06.2019 10:00, milesjreece3939
The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .
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