Question
True about genetic code:
A. AUA codes for methionine in mitochondria
B. UGA codes for selenocysteine
C. AUG codes for initiator codon in mammalian cell and AGA & AGG act as chain terminator in mammalian mitochondria both
D. All
Show Answer
|
Correct Answer » D Explanation |
 |
In mammalian mitochondria, the codon AUA is read as Methionine and UGA codes for Tryptophan.
In addition, in mitochondria, the codons AGA and AGG are read as stop or chain terminator codons rather than as Arginine.
Selenocysteine is specified by a large and complex genetic element for the unusual tRNA called tRNASec which utilizes the UGA anticodon that normally signals STOP.