Nuclear
Genome -
A
genome
is
the
complete
set
of
chromosomes
found
in
each
nucleus
of
a
given
species
which
contains
the
entire
genetic
material.
The
nuclear
genome
is
the
largest
in
the
plant
cell,
both
in
terms
of
picograms
of
DNA
and
in
number
of
genes
encoded
(complexity).
Eukaryotic
nuclear
genomes
can
be
distinguished
from
organelle
and
prokaryotic
genomes
by
size
and
complexity.
A
typical
higher
plant
genome,
for
example,
contains
about
5
x
109
base
pairs
of
DNA
per
haploid
set
of
chromosomes.
This
is
about
30,000
times
as
much
DNA
as
in
a
single
chloroplast
genome
and
some
10,000
times
as
much
as
in
a
moderately
sized
plant
mitochondrial
genome.
It
is
also
1000
times
more
than
that
of
bacterial
DNA
present
in
Escherichia
coli.
The
typical
plant
genome
with
5
x
109
base
pairs
of
DNA
would
be
about
three
metres
long
if
the
entire
DNA
were
to
be
laid
out
in
a
straight
line.
Chromosomes
are
composed
of
two
types
of
large
organic
molecules
(macromolecules)
called
proteins
and
nucleic
acids.
