If poly A is added to poly U, to form a double or triple helix, the combination is inactive. Download Download Share on Facebook Share on Twitter Rotate quotes add combination double
How is the base sequence, divided into codons? There is nothing in the backbone of the nucleic acid, which is perfectly regular, to show us how to group the bases into codons. Francis Crick acidbackbonebase Change image and share on social
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. Francis Crick acidambiguousamino share on social
This seems highly likely, especially as it has been shown that in several systems mutations affecting the same amino acid are extremely near together on the genetic map. Francis Crick acidaffectamino Change image and share on social
What I look for when I see a piece of art for the first time is some kind of emotional, intellectual experience, that's a combination of both of those things and is informed by my knowledge and something new that I see the artist doing. Cheech Marin artartistcombination share on social
If I can add, say, 10 great new violin concertos to the repertoire before I'm done, that will be truly exciting. Leila Josefowicz addconcertoexcit Change image and share on social
Think of the earth as a living organism that is being attacked by billions of bacteria whose numbers double every forty years. Either the host dies, or the virus dies, or both die. Gore Vidal attackbacteriumbillion Change image and share on social