A
____________________
is
a
mutation
that
exchanges
one
base
for
another
(
a
change
in
a
single
?
chemical
letter
?
)
.
____________________
are
mutations
in
which
extra
base
pairs
are
inserted
into
a
new
place
in
the
DNA
.
____________________
are
mutations
in
which
a
section
of
DNA
is
lost
.
Because
protein
-
coding
DNA
is
divided
into
codons
three
bases
long
,
insertions
and
deletions
can
alter
the
gene
so
that
the
message
is
not
correctly
parsed
.
These
changes
are
called
____________________
.
A
____________________
mutation
occurs
when
you
change
a
codon
to
one
that
encodes
the
same
amino
acid
and
causes
no
change
in
the
protein
produced
.
