The meaning of this observation is unclear, but it raises the unfortunate possibility of ambiguous triplets; that is, triplets which may code more than one amino acid. However one would certainly expect such triplets to be in a minority.
It now seems very likely that many of the 64 triplets, possibly most of them, may code one amino acid or another, and that in general several distinct triplets may code one amino acid.
Unfortunately it makes the unambiguous determination of triplets by these methods much more difficult than would be the case if there were only one triplet for each amino acid.
The balance of evidence both from the cell-free system and from the study of mutation, suggests that this does not occur at random, and that triplets coding the same amino acid may well be rather similar.
Attempts have been made from a study of the changes produced by mutation to obtain the relative order of the bases within various triplets, but my own view is that these are premature until there is more extensive and more reliable data on the composition of the triplets.
A comparison between the triplets tentatively deduced by these methods with the changes in amino acid sequence produced by mutation shows a fair measure of agreement.
It would appear that the number of nonsense triplets is rather low, since we only occasionally come across them. However this conclusion is less secure than our other deductions about the general nature of the genetic code.
Warner had more hands in his face than an OB-GYN delivering Vishnu's triplets!
The monotony of a long heroic poem may often be pleasantly relieved by judicious interruptions in the perfect successions of rhymes, just as the metre may sometimes be adorned with occasional triplets and Alexandrines.
The monotony of a long heroic poem may often be pleasantly relieved by judicious interruptions in the perfect succession of rhymes, just as the metre may sometimes be adorned with occasional triplets and Alexandrines.
I'm pregnant with triplets now and I feel really good.
My name, as you may have guessed, is Theodore. I come from a strange stock. The members of my family were mostly epileptics, vegetarians, stutterers, triplets, nailbiters. But we've always been happy.
Good news!" she chirped. "The doctor says this time it's triplets!
I'm in love with music, and I'm pregnant by it. It's like having twins. Or triplets. Or eight-lets!
They're combining that new fertility drug with a birth control pill for people who don't want triplets.
The outward appearance would never indicate they were brothers. (...) But she could see that at the moment they were as united as triplets in the womb.
The tabloids, instead of being about alien babies and stuff, it's my triplets, quadruplets, marriages, feuds.