If a base substitution of "T" in place of "C" occurred in position 3 of the transcribed DNA strand sequence "ACC" you would predict the protein product:
a. will be one amino acid different than the normal protein
b. will remain unchanged
c. will have a vastly different set of amino acids
d. will be smaller than the normal protein
2006-12-04 06:10:54 · 3 answers · asked by R C 2 in Science & Mathematics ➔ Biology
One would need to consult an mRNA "dictionary" for the answer to this, and considering that you should have access to one if you are being asked the question, you should have this one. Just look in the mRNA dictionary
2006-12-04 06:18:37 · answer #1 · answered by btpage0630 5 · 0⤊ 0⤋
The ACC is an aminoacid named as "Threonine".
If u replaced "C" with "T"in the third position , it becomes ACT which does not code for any aminoacid.
but when the respective DNA is transcribed it will read "ACC"as"UGA"which codes for an aminocid "opal". Opal is a stop codon which terminates the process of transcription.
so it will not produce any protein at all.
2006-12-04 07:14:19 · answer #2 · answered by tranquality213 2 · 0⤊ 0⤋
the answer is a, the aminoacid will be different, but sometimes the same 3 bases codify the same aminoacid.
here is a table with the genetic code, but when u have dna it's t (thiamine) and when rna is u (uracil). the table is from my biochemistry courses:
UUUPheUCUSerUAUTyrUGUCys
UUCPheUCCSerUACTyrUGCCys
UUALeuUCASerUAASTOPUGASTOP
UUGLeuUCGSerUAGSTOPUGGTrp
CUULeuCCUProCAUHisCGUArg
CUCLeuCCCProCACHisCGCArg
CUALeuCCAProCAAGlnCGAArg
CUGLeuCCGProCAGGlnCGGArg
AUUIleACUThrAAUAsnAGUSer
AUCIleACCThrAACAsnAGCSer
AUAIleACAThrAAALysAGAArg
AUGMet/startACGThrAAGLysAGGArg
GUUValGCUAlaGAUAspGGUGly
GUCValGCCAlaGACAspGGCGly
GUAValGCAAlaGAAGluGGAGly
GUGValGCGAlaGAGGluGGGGly
2006-12-04 06:20:30 · answer #3 · answered by Anonymous · 0⤊ 0⤋