BIO331 Exam UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Which of the following is the best example of kin selection? - CORRECT ANSWER A male
acorn woodpecker helping his parents feed his siblings
Which of the following examples is most likely not to be a system of sign stimulus and response? -
CORRECT ANSWER A jay tastes an orange butterfly that is poisonous, spits it out, and then
avoids any future orange butterflies.
A researcher observed variation in plasma testosterone hormone levels in birds that was associated
with variation in aggression: birds with higher levels of testosterone were more aggressive. In
addition, experimental addition of testosterone increased an individual's level of aggression. At what
level of analysis did the researcher investigate the bird behavior? - CORRECT
ANSWER proximate
How have twin studies proven to be beneficial? - CORRECT ANSWER Researchers can
determine the difference between environmental and genetic factors.
In a hypothetical population of birds with different wing sizes, ____________ selection selects for
individuals with larger wings. - CORRECT ANSWER directional
Which is the least accurate statement?Animal personalities ... - CORRECT ANSWER are
exclusively determined by genetic differences
Identify the false statement about the dominance hierarchy in primates based on this figure -
CORRECT ANSWER Being the alpha male is not costly.
A researcher has found variation in courtship behavior among closely related species. She has
determined that simple courtship dances are the ancestral form of the trait, while complex courtship
dances are derived. This research approach is an example of which of the following? - CORRECT
ANSWER comparative method
A study on a species of wild dog showed that males have spikes in testosterone levels about a month
after birth, and again at two years when they disperse to mate. To explore the function of these spikes,
QUESTIONS AND CORRECT ANSWERS
Which of the following is the best example of kin selection? - CORRECT ANSWER A male
acorn woodpecker helping his parents feed his siblings
Which of the following examples is most likely not to be a system of sign stimulus and response? -
CORRECT ANSWER A jay tastes an orange butterfly that is poisonous, spits it out, and then
avoids any future orange butterflies.
A researcher observed variation in plasma testosterone hormone levels in birds that was associated
with variation in aggression: birds with higher levels of testosterone were more aggressive. In
addition, experimental addition of testosterone increased an individual's level of aggression. At what
level of analysis did the researcher investigate the bird behavior? - CORRECT
ANSWER proximate
How have twin studies proven to be beneficial? - CORRECT ANSWER Researchers can
determine the difference between environmental and genetic factors.
In a hypothetical population of birds with different wing sizes, ____________ selection selects for
individuals with larger wings. - CORRECT ANSWER directional
Which is the least accurate statement?Animal personalities ... - CORRECT ANSWER are
exclusively determined by genetic differences
Identify the false statement about the dominance hierarchy in primates based on this figure -
CORRECT ANSWER Being the alpha male is not costly.
A researcher has found variation in courtship behavior among closely related species. She has
determined that simple courtship dances are the ancestral form of the trait, while complex courtship
dances are derived. This research approach is an example of which of the following? - CORRECT
ANSWER comparative method
A study on a species of wild dog showed that males have spikes in testosterone levels about a month
after birth, and again at two years when they disperse to mate. To explore the function of these spikes,
