Genetics-tRNA

[Temperature101]

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The following codons code for arginine-CGU, CGA, CGA, AGA. What is the minimum number of tRNAs required to recognize all these codons?

A. 1
B. 2
C. 3
D. 4


I thought the answer was D, but D is wrong... I don't get what concept this question is testing for...Is it wobbling?

Answer in white: B

 

[Timorito]

Mmmm id say 1 if all those codons code for same amino acid

 

[l0x]

the answer is two different tRNA molecules. The first tRNA anticodon base pair undergoes a "wobble effect" allowing for a degree of non-specificity.

See: http://en.wikipedia.org/wiki/Wobble_base_pair

 

[Temperature101]

the answer is two different tRNA molecules. The first tRNA anticodon base pair undergoes a "wobble effect" allowing for a degree of non-specificity.

See: http://en.wikipedia.org/wiki/Wobble_base_pair

Thanks... That's what I was thinking after missing the question. I hope mcat is not that specific.