A song about the double stranded DNA and chromosomes

1. DNA,
The
Double-­Stranded
By
Fardad
Firooznia
To
the
tune
of
America
the
Beautiful
Oh
double
stranded
DNA
with
A,
T,
C,
and
G
You
code
for
all
out
traits
and
any
peculiarity
You
have
introns
dividing
the
genes
into
exons
That
code
for
proteins
with
their
3
nucleotide
codons
A
pairs
with
T,
C
pairs
with
G,
because
of
hydrogen
bonds
These
pairings
are
what
create
the
uniform
ladder
rungs
Much
stronger
covalent
bonds
hold
the
backbone
in
its
place
The
phosphate
and
the
sugar,
deoxyribose
in
this
case
If
there’s
a
change
in
the
DNA
it’s
a
cause
for
concern
Mutations
in
the
codon
could
change
the
protein
in
turn
The
source
for
all
variation
is
such
genetic
mutation
That’s
subject
to
the
process
of
natural
selection
Larger
scale
changes
in
the
chromosomes
are
other
means
Inversion
of
a
segment
affects
linkage
of
genes
The
segments
are
cut
in
their
backbone
of
sugar
and
P
An
enzyme
must
ligate
them
now
from
P
to
shining
C