Module 2 genetic code and transcription(67 questions and answers).

Module 2:
genetic code and
transcription(67
questions and
answers)
the genetic code is described as
linear
where is the RNA sequence derived from
complementary bases of DNA
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genetic code order of events
DNA coding strand, template strand, RNA transcript,
polyptide (amino acid)
codon
group of three ribonucleotides that specify for one amino
acid
what does it mean that the genetic code is unambiguous
each triplet codon specifies a single amino acid
what does It mean that the genetic code is degenerate
more than one triplet codon can code for the same amino
acid
start codons
AUG- methionine
3 stop codons
UAA, UAG, UGA (do not code for amino acids)
what does it mean that the genetic code is non-
overlapping
one codon is only used for one protein AAA-GGG
how many different base pair combinations are possible?
4^3, 64
first evidence of triplet nature of code came from
insertion and deletion mutations in T4 bacteriophages