DNA WORKSHEET
NAME______________________________
Step 1).
Step 2).
Step 3).
Step 4).
back.
Replicate the DNA Strand labeled A creating strand B in the left column
Transcribe DNA Strand A into mRNA codons
Translate the mRNA codons into tRNA anticodons.
Decode the tRNA anticodons into amino acids using the tRNA table on the
DNA Strand B
DNA Strand A
T
A
C
G
G
G
C
T
A
C
A
A
C
T
T
A
A
C
A
G
A
C
C
A
Transcribe
mRNA
Translate
tRNA
Amino Acid
First
Base
U
C
A
G
U
SECOND BASE
C
A
G
Third
Base
UUU
Phenylalanine
UUC
Phenylalanine
UUA
Leucine
UUG
Leucine
UCU
Serine
UCC
Serine
UCA
Serine
UCG
Serine
UAU
Tyrosine
UAC
Tyrosine
UAA
STOP
UAG
STOP
UGU
Cysteine
UGC
Cysteine
UGA
STOP
UGG
Tryptophan
U
CUU
Leucine
CUC
Leucine
CUA
Leucine
CUG
Leucine
CCU
Proline
CCC
Proline
CCA
Proline
CCG
Proline
CAU
Histidine
CAC
Histidine
CAA
Glutamine
CAG
Glutamine
CGU
Arginine
CGC
Arginine
CGA
Arginine
CGG
Arginine
U
AUU
Isoleucine
AUC
Isoleucine
AUA
Isoleucine
AUG
START
ACU
Threonine
ACC
Threonine
ACA
Threonine
ACG
Threonine
AAU
Asparagine
AAC
Asparagine
AAA
Lysine
AAG
Lysine
AGU
Serine
AGC
Serine
AGA
Arginine
AGG
Arginine
U
GUU
Valine
GUC
Valine
GUA
Valine
GUG
Valine
GCU
Alanine
GCC
Alanine
GCA
Alanine
GCG
Alanine
GAU
Aspartate
GAC
Aspartate
GAA
Glutamate
GAG
Glutamate
GGU
Glycine
GGC
Glycine
GGA
Glycine
GGG
Glycine
U
C
A
G
C
A
G
C
A
G
C
A
G
To use the amino acid chart:
Find the first letter of the tRNA anticodon on the left column.
Find the second letter of the tRNA anticodon on the upper column.
Draw line from both columns until the lines meet.
Now find the third letter from the tRNA anticodon in the right column and draw a line
until it intersects with the other 2 lines.
Fill in the blank with the terms (1 point each)
Phosphate
Triplets
Deoxyribose
Thymine
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Bases
Proteins
Complementary
Helix
Amino Acids
Cytosine
DNA molecules contain information for building specific (1). In a
three-dimensional view a DNA molecule looks like a spiral staircase;
this is correctly called a (2). The constant parts of DNA molecules are
the (3) and (4) molecules, forming the DNA-ladder uprights, or
backbones. The information of DNA is actually coded in the sequence
of nitrogen containing (5), which are bound together to form the “rungs”
of the DNA ladder. When the four DNA bases are combined in
different three-base sequences called (6), different (7) of the protein are
called for. It is said that the N-containing bases of DNA are (8), which
means that only certain bases can fit together or interact together.
Specifically this means that (9) can only bind with guanine, and adenine
can only bind with (10).
Answer in sentences:
If a structural gene contains 300 DNA nucleotides, how many amino acids will be used in
the protein synthesis?
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If a protein has 150 amino acids, how many DNA nucleotides would make up the
structural gene?
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Describe in a sentence the relationship between the gene sequence and the tRNA
sequence? (Look at both columns how are they similar or different)
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