2023-11-28, 1 : 23 PM Quiz 3: HWE and Natural Selection (Opens on Friday, Sept 22; due Thursday, Sept 28 @ 11 : 59pm): Attempt review | eClass Page 1 of 6 https://eclass.yorku.ca/mod/quiz/review.php ? attempt=5034880&cmid=2574092 SC/BIOL1001 A - Biology II - Evolution, Ecology, Biodiversity and Conservation Biology (Fall 2023-2024) ❯ Quiz 3: HWE and Natural Selection (Opens on Friday, Sept 22; due Thursday, Sept 28 @ 11 : 59pm) Question 1 Correct Mark 1.00 out of 1.00 Started on Monday, 25 September 2023, 7 : 33 PM State Finished Completed on Monday, 25 September 2023, 7 : 58 PM Time taken 24 mins 17 secs Marks 10.00/10.00 Grade 100.00 out of 100.00 Select one: Allele R of the rangy gene encodes a dominant phenotype. Given random mating in the population, what will happen to the frequency of this allele in the population ? a. It will increase in frequency. b. It will decrease in frequency. c. You cannot predict whether it will increase or decrease based on this information alone.  The correct answer is: You cannot predict whether it will increase or decrease based on this information alone.

2023-11-28, 1 : 23 PM Quiz 3: HWE and Natural Selection (Opens on Friday, Sept 22; due Thursday, Sept 28 @ 11 : 59pm): Attempt review | eClass Page 2 of 6 https://eclass.yorku.ca/mod/quiz/review.php ? attempt=5034880&cmid=2574092 Question 2 Correct Mark 1.00 out of 1.00 Question 3 Correct Mark 1.00 out of 1.00 Question 4 Correct Mark 1.00 out of 1.00 Select one: You are studying gene Terrific . An allele ( t ) is found at a frequency of 0.4 in a population. The probability of an egg in that population containing the t allele is a. 0.4  b. 0.16 c. 0.2 d. 0.642 The correct answer is: 0.4 Select one: The Hardy-Weinberg equation is useful for the calculation of changes in a. allele frequencies  b. population size c. mutation frequencies d. speciation frequencies e. stabilizing effects The correct answer is: allele frequencies Select one: The Hardy-Weinberg principle tells us what to expect when a sexually reproducing population is a. not evolving.  b. evolving. c. changing population size. d. increasing in size. e. decreasing in size. The correct answer is: not evolving.

2023-11-28, 1 : 23 PM Quiz 3: HWE and Natural Selection (Opens on Friday, Sept 22; due Thursday, Sept 28 @ 11 : 59pm): Attempt review | eClass Page 4 of 6 https://eclass.yorku.ca/mod/quiz/review.php ? attempt=5034880&cmid=2574092 Question 7 Correct Mark 1.00 out of 1.00 Question 8 Correct Mark 1.00 out of 1.00 Select one: Which of the following statements is NOT true about genetic mutations ? a. They arise in response to new environments to allow organisms to adapt.  b. They are relatively rare. c. Those with beneficial effects on phenotype will be favoured by natural selection. d. Many reduce an individual’s chance of surviving and reproducing. e. Those with neutral effects neither help nor hurt the individual. The correct answer is: They arise in response to new environments to allow organisms to adapt. Select one: Darwin's inference that individuals within a population compete for limited resources was based on which observation(s) ? a. All of these.  b. Many more offspring are born than can survive. c. Not everyone survives long enough to reproduce. d. Food and other resources are limited for most populations. The correct answer is: All of these.

2023-11-28, 1 : 23 PM Quiz 3: HWE and Natural Selection (Opens on Friday, Sept 22; due Thursday, Sept 28 @ 11 : 59pm): Attempt review | eClass Page 5 of 6 https://eclass.yorku.ca/mod/quiz/review.php ? attempt=5034880&cmid=2574092 Question 9 Correct Mark 1.00 out of 1.00 Question 10 Correct Mark 1.00 out of 1.00 Select one: One part of Darwin's theory of evolution by natural selection is that individuals with certain traits have an increased competitive edge. The source of these traits is a. Inheritance  b. Adaptation to stress. c. Development over a lifetime. d. Mutation after birth. e. All of these. The correct answer is: Inheritance Select one: According to the theory of evolution by natural selection, which of the following is NOT true ? a. The individuals that survive to reproduce are a random sample of the population.  b. Natural selection occurs at the level of the individual, but changes are observed at the population level. c. Over-reproduction and limited resources leads to competition. d. Individuals with certain heritable traits contribute more to the next generation than others without those traits. The correct answer is: The individuals that survive to reproduce are a random sample of the population. Previous activity BIOL1001 L06 Next activity Weekly Activity - 3