Exam test code 11
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Each question is worth 2 points.
All answers must be on the scantron.
The "heat" in chili peppers is due to a molecule called capsaicin. Suppose you breed chili
peppers that have low amounts of capsaicin over many generations in order to make them
milder (have less capsaicin). What process is occurring?
none of the above
What are the requirements for evolution by natural selection in a given population?
(1) The population varies; (2) all variations are heritable; (3) some individuals produce
more offspring than others
(1) Individuals in a population vary; (2) the variation is neutral; (3) offspring are
produced that can survive; (4) certain traits lead to greater reproductive success than
(1) Individuals in a population vary; (2) the variation is heritable; (3) all individuals have
(1) Individuals in a population vary; (2) the variation is heritable; (3) some individuals
produce more offspring than others; (4) certain traits lead to greater reproductive
success than other traits.
Which of the graphs below best represents the relationship between the intensity of directional
selection and the genetic variation present within a population?
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 their original homeland. Which of the following likely
explains the genetic uniqueness of this population?
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