Transcribe the DNA strand given above to write the sequence of the mRNA strand in the 5’ to 3’ direction.                                                                                                                    Use the table and write the sequence of the resulting peptide.                                      Is it possible for a codon to code for another amino acid?

Biology Today and Tomorrow without Physiology (MindTap Course List)
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Chapter7: Gene Expression And Control
Section: Chapter Questions
Problem 7SQ
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  1. Transcribe the DNA strand given above to write the sequence of the mRNA strand in the 5’ to 3’ direction.                                                                                                                   
  2. Use the table and write the sequence of the resulting peptide.                                     
  3. Is it possible for a codon to code for another amino acid? 
  4. What will be the effect if a mutation changes the codon UAU to UAA? 
  5. What is a reading frame?                                                 
  6. If you are given a nucleotide sequence, how would you find Open Reading Frames?
  7. DISCUSS the reason why there are leading and lagging strands in replication? 

 

The Genetic Code:
Second letter
UUU]
Phe
UUCJ
UCU)
UAU
UGU
U
UC
Ser
UCA
Tyr
UGC Sys
ys
UACJ
UUA
UAA Stop UGA Stop A
UAG Stop UGG Trp G
UUG Leu
UCG
CUU
CUC
CỦA Leu
CUG
CCU
C
CCA
CCG
CAU
His
CAC J
CGU
CGC
Arg
Pro
CAA
Gln
CAG
CGA
CGG
A
AUU)
ACU
AAU
AGU
|Ser
AUC lle AC
AUA
ACA
AUG Met ACG
AACAsh AGC
Thr
AAA
Lys
AAG YS AGG
AGA
A
G
GUU
GAU ASP
GCU
GUC
GUA
GACJ
Ala
GAA Glu
GGU
Asp
GGC
Gly
GGA
GCC
Val
GCA
A
G.
GUG
GCG)
GGG
Third letter
First letter
Transcribed Image Text:The Genetic Code: Second letter UUU] Phe UUCJ UCU) UAU UGU U UC Ser UCA Tyr UGC Sys ys UACJ UUA UAA Stop UGA Stop A UAG Stop UGG Trp G UUG Leu UCG CUU CUC CỦA Leu CUG CCU C CCA CCG CAU His CAC J CGU CGC Arg Pro CAA Gln CAG CGA CGG A AUU) ACU AAU AGU |Ser AUC lle AC AUA ACA AUG Met ACG AACAsh AGC Thr AAA Lys AAG YS AGG AGA A G GUU GAU ASP GCU GUC GUA GACJ Ala GAA Glu GGU Asp GGC Gly GGA GCC Val GCA A G. GUG GCG) GGG Third letter First letter
The following sequence represents the dsDNA code fora short peptide:
5'-CTT TCC CAT CÁC CGC ATG CAT CCT CCC TCC TTT CTT TAA TAT TGG-3'
3'-GAA AGG GTA GTG GCG TAC GTA GGA GGG ACC AAA GAA ATT ATA ACC-5"
Transcribed Image Text:The following sequence represents the dsDNA code fora short peptide: 5'-CTT TCC CAT CÁC CGC ATG CAT CCT CCC TCC TTT CTT TAA TAT TGG-3' 3'-GAA AGG GTA GTG GCG TAC GTA GGA GGG ACC AAA GAA ATT ATA ACC-5"
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