Mean Annual Radiologist Salary. The average annual radiologist salary is $379,790. The lowest 10% of radiologist salaries are less than $276,427. The top 10% of radiologist salaries reach more than $496,323.he average annual radiologist salary is $379,790. The lowest 10% of radiologist salaries are less than $276,427. The top 10% of radiologist salaries reach more than $496,323.
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Chromosomes are molecules that consist of a very long strand of DNA coiled many times, and a few proteins called histones which hold the whole structure together. To put things very simply, chromosomes are made up of genes and genes are made of DNA. gene is a section of the DNA that codes for something, like hair color. DNA is a double helix of nucleic acids. DNA twists and folds to create a structure called a chromosome. Source(s): B.S. in Neurobiology.