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BIOL 2200 Exam 1 (1).
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BIOL2200
Exam
1
chapter
22
-
ANS-natural
selection
The
theory
of
evolution
through
natural
selection
is
considered
a
scientific
theory
because
__________.
-
ANS-All
of
the
listed
answers
are
correct.:
-
it
is
broad
enough
in
scope
to
explain
many
observations
-it
is
supported
by
a
massive
body
of
evidence
from
many
disciplines
-it
is
general
enough
to
provide
many
testable
hypotheses
An
adaptation
is
-
ANS-a
trait
that
gives
an
organism
a
reproductive
advantage
in
the
current
environment
EXP:
Evolutionary
adaptations
are
inherited
characteristics
that
enhance
an
organism's
ability
to
survive
and
reproduce
in
a
particular
environment.
evolution
-
ANS-descent
with
modification.
change
genetic
comp
of
pop
b/t
generations.
natural
selection
4
postulates
-
ANS--many
offspring
produced,
not
all
survive
(limited
resources)
-
traits
vary
among
individuals
w/in
pop
and
can
be
heritable
(patterns
bt
parents
and
offspring)
-
some
heritable
traits
provide
benefits/
advantages
in
environment
-
advantageous
traits
give
higher
fitness
(survival
and
reproduction)
so
become
more
common
Individuals
experience
selection
-
ANS-populations
evolve
Which
of
the
following
statements
best
describes
Darwin's
theory
of
evolution
by
natural
selection?
-
ANS-Darwin's
theory
emphasized
that
populations
vary
and
change
over
time. Which
of
the
following
observations
would
provide
evidence
supporting
Lamarck's
proposed
evolutionary
mechanism
of
"inheritance
of
acquired
characteristics"?
-
ANS-a
decrease
in
tail
length
in
dogs
after
20
generations
of
dogs
that
had
their
tails
docked
(cut
off)
as
puppies
hutton
-
ANS-earth
is
old
and
shaped
by
small
slow
changes--
not
well
received
malthus
-
ANS-economist.
populations
would
grow
unrestricted
if
resources
weren't
scarce.
culver
-
ANS-fossils
are
evidence
of
extinction
Lamarck
-
ANS-came
up
with
evolution
originally-
had
few
things
wrong,
changes
in
traits
through
life
w
use
and
disuse
and
passed
onto
offspring.
theory
of
acquired
inheritance.
weissman
disproved
w
mice
tails
lyell
-
ANS-earth
is
old
and
same
processes
have
been
shaping
it
over
time.
uniformitism.
James
Hutton
and
Charles
Lyell
provided
which
of
the
following
ideas
that
paved
the
way
for
Darwin's
thinking?
-
ANS-the
surface
features
of
Earth
were
formed
slowly
and
gradually
and
the
geological
processes
are
still
at
work
Why
do
dark-colored
rock
mice
on
dark
lava
flows
have
white
bellies?
-
ANS-The
color
of
a
rock
mouse's
belly
is
not
visible
to
a
predator
and
therefore
is
not
under
strong
selection
pressure.
Mutations
are
always
__________.
-
ANS-Mutations
are
rare
genetic
changes
that
can
be
neutral,
beneficial,
or
detrimental
depending
on
an
individual's
circumstances.
A
dark-color
fur
mutation
is
good
for
a
rock
mouse
living
on
black
lava
and
bad
for
one
living
in
the
sandy
desert.
competitive
advantage
-
ANS-A
small
evolutionary
advantage
can
lead
to
large
changes
in
a
population.
The
larger
the
advantage,
the
faster
the
changes
occur.
What
does
Dr.
Carroll
mean
when
he
says,
"while
mutation
is
random,
natural
selection
is
not"?
-
ANS-Natural
selection
can
only
work
on
variation
existing
in
a
population.
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