In DNA, there are 4 different kinds of nucleotides. A, T, C and G
In RNA, there are also 4, but T has been replaced by U. (I think. It's been awhile)
So there are 81 combos that you might see in real life, but there are 243 that you could prepare in a lab.
It has four.
There are 9 * 8 * 7, or 504, three letter permutations that can be made from the letters in the work CLIPBOARD.
6
Six.
There are 13 combinations.
Three nucleotides makes up each codon. The codons consist of combination of 4 differing nucleotides A,G,T, and C.
Nine nucleotides are needed to specify three amino acids.
A three-nucleotide sequence makes up a codon.
three
Three
three.
Three nucleotides are required to code for one amino acid.
There are 25 codons in an mRNA with 75 nucleotides because each codon consists of a sequence of three nucleotides.
Three.
Three nucleotides are required to encode one amino acid in the genetic code. This unit of three nucleotides is called a codon and it corresponds to a specific amino acid.
The codon and the anticodon interact with each other via hydrogen bonding, hence both the codon and anticodon are made up of the same number of nucleotides, which is three.
A gene with a protein containing 150 amino acids would require 450 nucleotides. This is because each amino acid is coded by three nucleotides in DNA.