Search for notes by fellow students, in your own course and all over the country.
Browse our notes for titles which look like what you need, you can preview any of the notes via a sample of the contents. After you're happy these are the notes you're after simply pop them into your shopping cart.
Title: Biology Chapter 33
Description: These notes come from a college class they are all separate. However, very cheap. Very detailed. .
Description: These notes come from a college class they are all separate. However, very cheap. Very detailed. .
Document Preview
Extracts from the notes are below, to see the PDF you'll receive please use the links above
BIOLOGY
CHAPTER 33 POWERPOINT
Nature vs Nurture Genetic Influences
gene influence-nature
environmental influence-nurture
Behavior-any action that can be observed and described
Genes, to a degree, control behavior
Love Birds Nesting Behavior
Fischer lovebirds- cut strips from leaves and carry them to their nest
Peach-face lovebirds-cut strips but tuck them into their rump feather and
carry them that way
Hybrid lovebird-exhibit intermediate behavior-cut strips and try to tuck them
into feathers-unsuccessful
The intermediate behavior of hybrid supports the hypothesis that behavior
has genetic basis
Imprinting
considered a simple form of learning, although has genetic component as
well
First observed of birds following the first moved object they saw after
hatching
object typically their mother
found bird can imprint nt any object during sensitive period
Sensitive period-only time during which imprinting may occur
Social Interactions and Learning
Songs learning in bird
white crowned sparrows singe specific species song-different dialects
First birds- heard no songs-sang undeveloped song as adults
Second birds-heard recorded species song sang in dialect
Third birds-adult tutors of different species sang even from different speciestutoring began
Associative learning
change in behavior that involves an association between two events
Animal Communication
animal exhibits a diversity of social behavior
some pair, bond, and cooperate to raise offspring
others form a society in which species members organize in a cooperative
manner
social behaviors requires communication among animals
Communication-a signal by sender that influences the behavior of the
receiver
Chemical Communication
advantage of being effective both night and day
Pheromones-chemical signals passed in low concentration between
members of the same species
Auditory Communication
being faster than chemical communication
effective both night and day
can be modified for species situations
Visual Communication
used most often by species are active during the day
plumage in male birds used for courtship dance to attract female
fireflies use flash patterns to signals females of the same species
Behavior that Affect Fitness
o most behavior is subject to natural selection
o behaviors can have genetic component
o much of the behavior observed must have adaptive value
Sexual Selection
form of natural selection that features that increase an animal chances of
mating
features are adaptive in that they lead to increased fitness
Common results
female choice-limit number of eggs to fertilize
Male competition-fertilize as many as eggs as possible to increase their
fitness
Altruism vs Self-Interest
Altruism-self-sacrificing behavior for the good of another member of the
society
It may compromise the fitness of the altruist, while benefiting the recipient
It is more evident in human behaviors such as volunteering in as firefighter
Kin selection-explains altruistic behavior in animals
Inclusive fitness- and individual’s personal reproductive success, as well as
that of his or her relatives, and thus to an individual’s total genetic
contribution to the next generation
Title: Biology Chapter 33
Description: These notes come from a college class they are all separate. However, very cheap. Very detailed. .
Description: These notes come from a college class they are all separate. However, very cheap. Very detailed. .