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Transcript
Identify the structures labeled
I, II, III, IV and V
AUG CCU
AUU GAU GGC CCA
UAA
GUU
How would a change in the sequence of
nucleotides in a DNA molecule affect the
mRNA transcribed from the DNA molecule?
Any change in the DNA would cause a
change in the mRNA molecule
The diagram below shows a codon chart. A codon
chart shows which codons code for which amino acids.
This chart shows the amino acids coded for by each
of the 64 possible mRNA codons. To find which
amino acid the codon CAA codes for, follow these
steps. (1) Look on the left side of the chart to
find the large row of codons that begin with C. (2)
Move across this row until you get to the column of
codons whose second
base is A. (3) Move
down this column until
you get to the row of
codons whose third
base is A. The codon
CAA codes for the
amino acid glutamine.
Suppose a DNA
mutation led to a
change in a single
mRNA codon. Now
suppose this codon
changed from GCC
to GCG.
By looking at the codon chart, you can see that
both of these codons code for the amino acid
alanine. So even though the DNA and mRNA have
changed, there is no change in the protein!
Methionine
(start)
Leucine
Theronine
Stop
AUG
AAU
AAC
GUU GUC
GUA GUG
CAU
CAC
LEU
GLY
SER
PRO
UAU
GGG
UCC
CCU
Based on
the
information
provided in
the table,
which plant
species is
most closely
related to
the
endangered
species?
Support
your
answer.
1. Take two sheets of
copy paper and
separately fold them like
a “hamburger.”
Mark both folds one
inch from the outer
edges.
2.
On one of the folded
3.
sheets, cut from the
top and bottom edge to the
marked spot on both sides
On the second
4.
folded sheet,
start at one of the
marked spots and cut
the fold between the
two marks.
Take the cut sheet
from step 3 and
fold it like a
burrito. Place the
burrito through the
other sheet and
then open the
burrito. Fold the
bound pages in half
to form an eightpage book
5.
However, you must completely use
all pages of your book
Read the
“Help Wanted”
job descriptions
on the following
slides and
determine which
component of
protein synthesis
would be best
suited for the
position.
Positions Available in the genetics industry.
Hundreds of entry-level openings for tireless
workers. No previous experience necessary.
Must be able to transcribe code in a nuclear
environment. The ability to work in close
association with ribosomes is a must.
Accuracy and Speed vital for this job in the
field of translation. Applicants must demonstrate
skills in transporting and positioning amino
acids. Salary commensurate with experience.
Executive Position available. Must be able to
maintain genetic continuity through replication
and control cellular activity by regulation of
enzyme production. Limited number of
openings.
All benefits.
Supervisor of production of proteins—all shifts.
Must be able to follow exact directions from
double-stranded template. Travel from nucleus
to the cytoplasm is additional job benefit.
Applicants for the
first job, “Positions
Available,” could
qualify if they were?
Positions Available in the genetics industry.
Hundreds of entry-level openings for tireless
workers. No previous experience necessary.
Must be able to transcribe code in a nuclear
environment. The ability to work in close
association with ribosomes is a must.
Accuracy and Speed vital for this job in the
field of translation. Applicants must demonstrate
skills in transporting and positioning amino
acids. Salary commensurate with experience.
Executive Position available. Must be able to
maintain genetic continuity through replication
and control cellular activity by regulation of
enzyme production. Limited number of
openings.
All benefits.
Supervisor of production of proteins—all shifts.
Must be able to follow exact directions from
double-stranded template. Travel from nucleus
to the cytoplasm is additional job benefit.
Applicants for the
second job,
“Accuracy
and Speed,” could
qualify if they were
Positions Available in the genetics industry.
Hundreds of entry-level openings for tireless
workers. No previous experience necessary.
Must be able to transcribe code in a nuclear
environment. The ability to work in close
association with ribosomes is a must.
Accuracy and Speed vital for this job in the
field of translation. Applicants must demonstrate
skills in transporting and positioning amino
acids. Salary commensurate with experience.
Executive Position available. Must be able to
maintain genetic continuity through replication
and control cellular activity by regulation of
enzyme production. Limited number of
openings.
All benefits.
Supervisor of production of proteins—all shifts.
Must be able to follow exact directions from
double-stranded template. Travel from nucleus
to the cytoplasm is additional job benefit.
Applications for the
third job, “Executive
Position,” could
qualify if they were
Positions Available in the genetics industry.
Hundreds of entry-level openings for tireless
workers. No previous experience necessary.
Must be able to transcribe code in a nuclear
environment. The ability to work in close
association with ribosomes is a must.
Accuracy and Speed vital for this job in the
field of translation. Applicants must demonstrate
skills in transporting and positioning amino
acids. Salary commensurate with experience.
Executive Position available. Must be able to
maintain genetic continuity through replication
and control cellular activity by regulation of
enzyme production. Limited number of
openings.
All benefits.
Supervisor of production of proteins—all shifts.
Must be able to follow exact directions from
double-stranded template. Travel from nucleus
to the cytoplasm is additional job benefit.
Applicants for the
fourth job,
“Supervisor,”
could qualify if they
were