Evolution and Multiple Choice Questions

Topics: Evolution, Natural selection, Population genetics Pages: 6 (1184 words) Published: November 3, 2014
BIO 1130MM
An introduction to Organismal biology
Midterm examination
Worth either 15% or 20% of your final grade
Saturday, October 5, 2013

Part A: Multiple choice questions
20 points (1 point/question)

Fill in the bubbles for your name and student number and BIO1130MM for the course code. Fill in the same information in text in the boxes above the bubbles.
Use only a pencil to fill in the answer sheet. If you erase a question be sure to erase all of the pencil mark. Don’t place any marks anywhere on the sheet other than where the bubbles are for personal information or your answers.

Do not place any answers on the question sheet.
This is not an open book exam.
CAUTION to minimize paper waste this part of the exam has been printed back to back NOTE: If you do not fill in the student number and course code as BIO1130MM it will be impossible to identify your answer sheet and you will receive a ZERO for this part of the exam

Page 1 of 4

BIO 1130MM - Midterm Examination – October 13, 2012
Multiple choice questions - Place your answers on the answer sheet

MM.1 The founder effect is a type of
a. gene flow.
b. mutation.
c. adaptation.
X d. genetic drift.
e. natural selection.
MM.2. Which of the following ideas proposed by Lamarck was NOT included in Darwin's theory? a. Organisms change in response to their environments.
X b. Changes that an organism acquires during its lifetime are passed to its offspring. c. All species change with time.
d . Changes are passed from one generation to the next.
MM.3. The concept of uniformitarianism _____.
a. was proposed by James Hutton
X b. states that the processes that formed the Earth continue to occur in the present time c. implies that the Earth must be thousands of years old
d. does not apply to biological evolution
MM.4 Variation is not preserved by _____.
a. diploidy
b. heterozygote advantage
c. varying environments
X d. inbreeding
MM.5 The number of major taxonomic categories in the present classification system. a. Five
b. Four
X c. Seven
d. Six
X e. Eight
MM.6 The Dunkers are a religious group that moved from Germany to Pennsylvania in the mid-1700s. They do not marry with members outside their own immediate community. Today, the Dunkers are genetically unique and differ in gene frequencies, at many loci, from all other populations including those in their original homeland. Which of the following likely explains the genetic uniqueness of this population?

a. Population bottleneck and Hardy-Weinberg equilibrium
X b. Founder effect and genetic drift
c. Heterozygote advantage and stabilizing selection
d. Mutation and natural selection
e. Sexual selection and inbreeding depression

Page 2 of 4

BIO 1130MM - Midterm Examination – October 13, 2012
Multiple choice questions - Place your answers on the answer sheet MM.7 Fossil evidence indicates that horses have gradually increased in size over geologic time. Which of the following terms best describes this?

a. sexual selection
b. stabilizing selection
c. disruptive selection
d. artificial selection
X e. directional selection
MM.8 Which of the following agents of microevolutionary change is most likely to cause the greatest effect on genetic variation in the least amount of time?
a. mutation
b. genetic drift
X c. gene flow
d. nonrandom mating
MM.9 Which of the following statements is not a possible mechanism for evolution as proposed by Jean Baptiste de Lamarck?
a. Body parts grow in proportion to how much they are used, while unused body parts shrink. b. Changes acquired in an organism’s lifetime are passed on to its offspring. X c. Only the fittest organisms survive.

d. A metaphysical “perfecting principle” caused organisms to become better suited to their environments.
MM.10 Why don't spontaneous mutations have an immediate effect on allele frequencies in large populations?
a. Mutations are random events, and mutations may be either beneficial or harmful. b. Most...
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