dna, genes and chromosomes - 4 Flashcards
topic 2
1
Q
what do histone proteins do
A
help support the dna
2
Q
each amino acid is coded for by a sequence of 3 bases in a gene called what
A
a triplet or codon
3
Q
what is the first step of protein synthesis
A
dna is copied into the messenger rna
4
Q
what is functional rna
A
molecules other than mrna which perform special tasks during protein synthesis
5
Q
what are introns
A
genes that code for polypeptides and don’t code for amino acids
6
Q
what are exons
A
all the parts of a gene that do code for an amino acid
