Biology, 13.05.2021 20:20 nathang444
The Barton Springs salamander is an endangered species found only in a single spring in the city of Austin, Texas. There is growing concern that a chemical spill on a nearby freeway could pollute the spring and wipe out the species. To provide a source of salamanders to repopulate the spring in the event of such a catastrophe, a proposal has been made to establish a captive breeding population of the salamander in a local zoo. Suppose you are asked to provide a plan for establishing this captive breeding population, with the goal of maintaining as much of the genetic variation of the species as possible in the captive population.
What factors are likely to lead to a loss of genetic variation in the captive population?
a. increased rate of mutation
b. a founder effect
c. reduced genetic drift over time
d. a lack of inbreeding
What strategy would likely be effective in mitigating the loss of genetic variation in the captive population? a. keeping the sex ratio as close to 50:50 as possible
b. stopping gene flow to and from the captive population
c. regularly mating individuals that are related
d. keeping the captive population as small as possible
Answers: 2
Biology, 21.06.2019 18:30
The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.
Answers: 3
Biology, 21.06.2019 18:30
Which sentence best expresses the differing opinions of these two book reviews?
Answers: 1
Biology, 22.06.2019 00:00
Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy
Answers: 2
Biology, 22.06.2019 01:00
Why would a drug the damages capsids treat a viral infection
Answers: 1
The Barton Springs salamander is an endangered species found only in a single spring in the city of...
Mathematics, 11.11.2020 04:00
Mathematics, 11.11.2020 04:00
French, 11.11.2020 04:00
Mathematics, 11.11.2020 04:00
English, 11.11.2020 04:00
Social Studies, 11.11.2020 04:00
Physics, 11.11.2020 04:00
History, 11.11.2020 04:00
Mathematics, 11.11.2020 04:00
Biology, 11.11.2020 04:00
Geography, 11.11.2020 04:00
Chemistry, 11.11.2020 04:00
Biology, 11.11.2020 04:00
German, 11.11.2020 04:00