Questions for discussion 4 (key)

Dtoproviderelativelystablenamesfororganisms

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America.
This
type
of
event
is
called

 a.
allopatric
speciation.
 b.
temporal
isolation.
 c.
mechanical
isolation.
 d.
sympatric
speciation.
 e.
None
of
the
above.
 27.
Six
platyfish
with
different
tail
spotting
patterns
live
is
eastern
Mexico.
Five
of
 them
can
interbreed
and
produce
fertile
offspring.
One
of
them
cannot
interbreed
 with
the
other
five.
What
can
you
conclude
about
these
platyfish?
 a.
They
all
belong
to
the
same
biological
species.
 b.
They
each
are
a
different
biological
species.
 c.
There
are
two
biological
species
in
the
example
above.
 d.
There
is
not
enough
data
given
to
draw
a
conclusion.
 e.
There
are
six
biological
species
in
the
example
above.
 
 28.
Which
of
the
following
is
not
true
about
prezygotic
reproductive
barriers?
 a.
Sperm
of
one
species
may
not
attach
to
the
egg
of
another
species
because
the
 eggs
do
not
release
the
appropriate
chemicals.
 b.
Individuals
of
a
species
may
reject
individuals
of
other
species
as
mating
partners.
 c.
Differences
in
sizes
and
shapes
of
reproductive
organs
may
prevent
the
union
of
 gametes
from
different
species.
 d.
Organisms
have
mating
periods
that
are
as
long
as
few
days
or
weeks.
 e.
Individuals
of
different
species
may
select
different
places
in
the
environment
in
 which
to
live.
 
 29.
Reptiles
dominated
the
:
 a.
Proterozoic
era.
 b.
Paleozoic
era.
 c.
Mesozoic
era.
 d.
Cenozoic
era.
 e.
Triassic
era.
 
 30.
A
genus
is
a

 a.
group
of
closely
related
species.
 b.
group
of
genera.
 c.
group
of
similar
genotypes.
 d.
taxonomic
unit...
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This note was uploaded on 02/01/2014 for the course BIO 311D taught by Professor Reichler during the Fall '08 term at University of Texas at Austin.

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