Biology, 04.10.2019 20:20 ahmadfarriz5948
In 1986, a nuclear power accident in chernobyl, ussr (now ukraine), led to high radiation levels for miles surrounding the plant. the high levels of radiation caused elevated mutation rates in the surviving organisms, and evolutionary biologists have been studying rodent populations in the chernobyl area ever since. based on your understanding of evolutionary mechanisms, which of the following most likely occurred in the rodent populations following the accident?
a) mutation caused the fixation of new alleles. b) mutation caused genetic drift and decreased fitness. c) mutation by itself led to major changes in rodent physiology over time. d) mutation led to increased genetic variation and a higher rate of evolutionary change.
Answers: 1
Biology, 21.06.2019 19:30
Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.
Answers: 3
Biology, 22.06.2019 01:20
Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.
Answers: 1
Biology, 22.06.2019 13:00
Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land
Answers: 1
Biology, 22.06.2019 21:00
Brass gets discoloured in air because of the presence of which of the following gases in air? a. oxygen b. hydrogen sulphide c. carbon dioxide d. nitrogen
Answers: 2
In 1986, a nuclear power accident in chernobyl, ussr (now ukraine), led to high radiation levels for...
Mathematics, 06.12.2019 05:31
Chemistry, 06.12.2019 05:31
Mathematics, 06.12.2019 05:31
English, 06.12.2019 05:31
Biology, 06.12.2019 05:31
Mathematics, 06.12.2019 05:31
Mathematics, 06.12.2019 05:31
Spanish, 06.12.2019 05:31
Chemistry, 06.12.2019 05:31
Mathematics, 06.12.2019 05:31