Chapter 12: DNA and RNA. Wheatley-Heckman Honors Biology/Chemistry. DNA. DNA is a long molecule made up of units called nucleotides . Each nucleotide is made up of 3 basic components: 5-carbon sugar (deoxyribose) Phosphate group Nitrogenous base.
Chapter 12: DNA and RNA
The two strands are said to be “complementary”.
A C T G G A T C T
Ribosomes are made up of proteins and ribosomal RNA (rRNA).
In an insertion, an extra base is inserted into a base sequence.
In a deletion, the loss of a single base is deleted and the reading frame is shifted.