SBI4U
Name:
EXPLORING DNA
Go to the NOVA Website:
https://www.pbs.org/wgbh/nova/genome/explore.html
EXPLORE A STRETCH OF CODE
Examine the DNA base sequence that is presented. Complete this table to
get a picture of Gene Architecture:
Feature of
the Gene:
ON/OFF
SWITCH
Definition & Description:
onloft genes control
wether or not this gene
is
being expresse
time
that
START CODON
,
has 3 of 4
T, (or 6)
them to create
STOP CODON
and
uses
amino
acids that create
proteins
stop codon has
3
bases
&
uses
of 4
them
to stop the creation
of protein
INTRONS
a
chains
section within
helps
it
DNA
our
body regulate
whats going on & where its
can
happening so that we
regulate
.
start codon
bases (A
in
Significance:
its
our
how
amino
we
bodies reactions
control
acid and
protein production
body
tells the
the
creating
to
stop
protein
because the process
chain
is
done
unknown
that doesn't code for
anything
exons
EXONS
get
spliced
together
to make the final MBNA
copy
.
I creates more
complex genes
unknown Theories that
.
they
make
them
complex
more
DNA from other
TRANSPOSABLE genes
that
ELEMENTS
Soreign organisms
(HITCHHIKING infected us I gave us
CODE)
new
regulating activity of
genes
genes
ANCIENT CODE
relationship
our
sharing
other
the
VARIABLE
SITES
our
genes with
are
species They
.
a
cell Where
.
every
from
was derived
species
.
oldest genes
genes slightly
differ from others We are
99 9 % similar the other
where
our
.
.
0 1%
.
of the function of
basis
,
is
our
unigness
how
species
are
differenciated &
identified