CourseWare Test 2 - COURSEWARE CLOCK NAVIGATION[1[1[1[1 Q1 Q2 Q3 Q4[1[1[1[1 Q5 Q6 Q7 Q8[1[1[1[1 Q9 Q 10 Q 11 Q 12[1[1[1[1 Q 13 Q 14 Q 15 Q

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
C OURSE W ARE   CLOCK NAVIGATION [1] Q 1 [1] Q 2 [1] Q 3 [1] Q 4 [1] Q 5 [1] Q 6 [1] Q 7 [1] Q 8 [1] Q 9 [1] Q 10 [1] Q 11 [1] Q 12 [1] Q 13 [1] Q 14 [1] Q 15 [1] Q 16 [1] Q 17 [1] Q 18 [1] Q 19 [1] Q 20 [5] Q 21 TEST INFORMATION Your Score is 14 Out of: 25 Time Allowed: 90 min Total Problems: 21 COLORING LEGEND Not Answered Incorrect Correct You scored 14 out of 25 Question 1 Your answer is CORRECT. The selectionist theory posits that most variation is maintained in populations as a result of natural selection. Which of the following can result in the maintenance of genetic variation due to natural selection? a) Convergent evolution b) Mutation-selection balance c) Small population size d) Hardy-Weinberg equilibrium e) Selection on a beneficial dominant allele f) C and E g) A and D Question 2 Your answer is CORRECT. The proponents of compulsory sterilization (a form of eugenics) sought to reduce the frequency of alleles for undesirable phenotypes, e.g. "feeblemindedness," by effectively reducing the fitness of individuals with that phenotype to zero. Under which of the following conditions would their plan NOT have worked? a) Population growth rate is slow. b) Undesirable traits have high heritability. c) Undesirable traits are caused by deleterious alleles. d) Undesirable traits are caused by rare recessive alleles.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Question 3 Your answer is CORRECT. The graph below shows the change in allele frequency, p, over 100 generations of selection. At generation 0, p=0.1. The orange and green lines represent evolution in two different populations experiencing two different selective scenarios. Which statement best describes the difference between the green and orange scenarios? a) The green line shows a beneficial dominant allele; the orange line shows a beneficial recessive allele. b) The orange line demonstrates heterozygote advantage; the green line demonstrates heterozygote disadvantage. c) The orange line shows a stable equilibrium; the green line shows an unstable equilibrium. d) The selective coefficient is larger for the orange line than the green line. e) The green line shows the effects of genetic drift; the orange line shows the effects of natural selection. Question 4 Your answer is CORRECT. The two graphs below show the change in allele frequency, p, over 100 generations. Each graph shows seven independent populations, represented by different colors, all experiencing the same evolutionary forces. At generation 0, p=0.5. What is the most likely difference between populations shown in the graph on the left compared to the
Background image of page 2
populations in the graph on the right? a) Selection is weaker in the populations in the left graph than in the populations in the right graph. b)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/27/2011 for the course BIOL 3306 taught by Professor Zufall during the Spring '09 term at University of Houston.

Page1 / 10

CourseWare Test 2 - COURSEWARE CLOCK NAVIGATION[1[1[1[1 Q1 Q2 Q3 Q4[1[1[1[1 Q5 Q6 Q7 Q8[1[1[1[1 Q9 Q 10 Q 11 Q 12[1[1[1[1 Q 13 Q 14 Q 15 Q

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online