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Chris M.
Chris M., M.S.W. Social Work
Category: Homework
Satisfied Customers: 2542
Experience:  Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)
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1. Locally adapted and genetically distinctive populations within a species are referred to as: (Points: 5)


        heterotypes.


        metatypes.


        genotypes.


        ecotypes.


 


 


2. Within a population, if the average is selected for and the two opposing extremes are selected against, this is an example of: (Points: 5)


        directional selection.


        disruptive selection.


        stabilizing selection.


        natural selection.


 


 


3. Over time, average phenotypes become less common and the population becomes phenotypically more diverse as a result of __________ selection. (Points: 5)


        bimodal


        directional


        disruptive


        stabilizing


 


 


4. Molecular biology has helped scientists examine the genetics and evolution of different species. Which of the following sequences is correctly ordered? (Points: 5)


        Restriction fragments, restriction enzymes, PCR, electrophoresis


        PCR, restriction enzymes, restriction fragments, electrophoresis


        Restriction enzymes, PCR, electrophoresis, restriction fragments


        PCR, electrophoresis, restriction enzymes, restriction fragments


 


 


5. All of the following conditions are included in the Hardy–Weinberg equilibrium principle except: (Points: 5)


        no mutation.


        non-random mating.


        large population size.


        no immigration.


 


 


6. __________ is/are defined as a group of potentially breeding organisms within a species in a given space and time. (Points: 5)


        Density


        Abundance


        Distribution


        Populations


 


 


7. Whittaker's research on North American tree distribution examined __________ gradients and concluded that the tree distribution was __________. (Points: 5)


        temperature; random


        temperature; clumped


        moisture; clumped


        moisture; random


 


 


8. In order to determine whether a species is common or rare, ecologists use all of the following criteria EXCEPT: (Points: 5)


        habitat tolerance.


        evolutionary existence.


        geographical range.


        local population size.


 


 


9. The rarest animal is the __________ and the rarest plant is the __________. (Points: 5)


        Northern spotted owl; Pacific Yew


        Siberian tiger; Asplenium septrionale


        Tasmanian devil; Welwitschia


        Mountain gorilla; Prichardia Monroe


 


 


10. Rarity I can be described by the following indicators: (Points: 5)


        restricted range, narrow habitat tolerances, and small local populations.


        restricted range, broad habitat tolerances, and large local populations.


        extensive range, narrow habitat tolerances, and large local populations.


        extensive range, broad habitat tolerances, and small local populations.


 


 


11. Which of the following word pairs are mismatched? (Points: 5)


        Random distribution: aggressive interaction


        Clumped distribution: attraction to a common source


        Regular distribution: antagonistic behaviors


        Large scale distribution: substantial environmental changes


 


 


12. Which of the following is mismatched? (Points: 5)


        Eastern grey kangaroo: temperate and tropical forest


        Western grey kangaroo: little seasonal variation in precipitation


        Red kangaroo: savanna and desert


        Western kangaroo: temperate woodland and shrubland


 


 


13. The Type I survivorship curve indicates: (Points: 5)


        low juvenile mortality and high mortality in older adults.


        high juvenile mortality and low mortality in older adults.


        low juvenile mortality and low mortality in older adults.


        high juvenile mortality and high mortality in older adults.


 


 


14. Humans would best be represented by which of the following survivorships curves? (Points: 5)


        I


        II


        III


        IV


 


 


15. The age distribution of a population can reveal: (Points: 5)


        growth potential.


        survivorship.


        reproduction.


        growth potential, survivorship, and reproduction.


 


 


16. A group of subpopulations living in spatially isolated patches connected by exchange of individuals among patches is called a(n): (Points: 5)


        micropopulation.


        megapopulation.


        isopopulation.


        metapopulation.


 


 


17. Which of the following indicates a population in decline? (Points: 5)


        R0=6.01


        R0=0.601


        R0=0


        R0= - 0.601


 


 


18. Out of 1 million eggs laid by a mackerel, more than 999,990 die during the first 70 days of life either as eggs, larvae, or juveniles. The mackerel has a __________ survivorship curve. (Points: 5)


        Type I


        Type II


        Type III


        Type IV


 


 


19. Which of the following equations bests represents the per capita rate of increase? (Points: 5)


        r = T/(ln R0)


        r = (ln R0)/T


        l = Nt/( Nt+1)


        l = (Nt+1)/Nt


 


 


20. Type II survivorship curve indicates: (Points: 5)


        low juvenile mortality and high mortality in older adults.


        high juvenile mortality and low mortality in older adults.


        low juvenile mortality and low mortality in older adults.


        equal chance of dying at any age. 

Submitted: 3 years ago.
Category: Homework
Expert:  Chris M. replied 3 years ago.
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Chris M., M.S.W. Social Work
Category: Homework
Satisfied Customers: 2542
Experience: Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)
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