Unformatted text preview: 3/29/2017 Module 7: Lab Bench Activity: BSC2005: Biological Sciences, Spring 2017 Module 7: Lab Bench Ac頍�vity
Due Feb 17 at 11:59pm
Time Limit 120 Minutes Points 10 Questions 10 Available Feb 4 at 2am Feb 24 at 11:59pm 21 days Instruc頍�ons You may use your worksheets and notes form this Module's lectures, readings and activities. The password for this quiz is included in the instructions for the activity that you need to complete before taking the quiz. This quiz was locked Feb 24 at 11:59pm. A埆�empt History LATEST Attempt Time Score Attempt 1 22 minutes 9 out of 10 Score for this quiz: 9 out of 10
Submitted Feb 17 at 11:06pm
This attempt took 22 minutes. Question 1 1 / 1 pts In a population that is in HardyWeinberg equilibrium, the frequency of the homozygous recessive genotype is
.09. What is the frequency of individuals that are homozygous for the dominant allele? 0.07 0.21 0.42 Correct! 0.49 0.91 Question 2 1 / 1 pts When individuals in a population choose which individuals they will mate with on the basis of specific
characteristics, this is: 1/5 3/29/2017 Module 7: Lab Bench Activity: BSC2005: Biological Sciences, Spring 2017 chance a bottleneck Correct! assortative mating random mating Question 3 1 / 1 pts When gametes (eggs and sperm) are combined purely on the basis of chance, this is termed: Correct! random mating nonrandom mating assortative mating none of these Question 4 1 / 1 pts The HardyWeinberg equation is useful because it provides a: way to predict how a population will evolve Correct! mathematical model to study changes in allele frequency way to evaluation population growth statistical model to predict change over time Question 5 1 / 1 pts If the frequency of two alleles in a gene pool is 90% A and 10% a, what is the frequency of individuals in the
population with the genotype Aa?
2/5 3/29/2017 Module 7: Lab Bench Activity: BSC2005: Biological Sciences, Spring 2017 0.81 0.09 Correct! 0.18 0.01 0.198 Question 6 1 / 1 pts Chance events (random change) results in: migration natural selection selective mating Correct! genetic drift Question 7 1 / 1 pts In humans, Rhpositive individuals have the Rh antigen on their red blood cells, while Rhnegative individuals
do not. If the Rhpositive phenotype is produced by a dominant gene (A), and the Rhnegative phenotype is due
to its recessive allele (a), what is the frequency of the Rhpositive allele if 84% of a population is Rhpositive? 0.04 0.16 0.48 Correct! 0.60 0.84 3/5 3/29/2017 Module 7: Lab Bench Activity: BSC2005: Biological Sciences, Spring 2017 Question 8 1 / 1 pts The HardyWeinberg equation almost never holds true in real life because: there is no natural selection it requires assortative mating Correct! populations and allele frequencies are always changing populations and allele frequencies cannot be calculated. Question 9 0 / 1 pts Either emigration or immigration can: You Answered lead to genetic drift lead to mutation Correct Answer cause a change in the composition of the gene pool lead to inbreeding Question 10 1 / 1 pts Mutation can result in: violation of HardyWeinberg conditions a change in allelic frequencies Correct! both of the above neither of the above 4/5 3/29/2017 Module 7: Lab Bench Activity: BSC2005: Biological Sciences, Spring 2017 Quiz Score: 9 out of 10 5/5 ...
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