Two new strands of DNA. <--- Gradpoint/NovaNet
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As a result he lost his job
The four nitrogen bases are Adenine, Thymine, Cytosine, and Guanine. Their job is composing a code for DNA to shape the physical characteristics of most living things.
The Blueprint of Life Every cell in your body has the same "blueprint" or the same DNA. Like the blueprints of a house tell the builders how to construct a house, the DNA "blueprint" tells the cell how to build the organism. Yet, how can a heart be so different from a brain if all the cells contain the same instructions? Although much work remains in genetics, it has become apparent that a cell has the ability to turn off most genes and only work with the genes necessary to do a job. We also know that a lot of DNA apparently is nonsense and codes for nothing. These regions of DNA that do not code for proteins are called "introns", or sometimes "junk DNA". The sections of DNA that do actually code from proteins are called "exons".
There is a disconnect in my studies that I can't piece together from a clinical genetics book or anything I am reading on-line. It may be something very simple and dumb that I have forgotten or overlooked. I feel dumb for asking but no resources clearly lay it out. They do a good job at talking about DNA and how it replicates but then skip to Mitosis and separate chromosomes and do not help me in making the connection between a DNA double helix and the separate chromosomes. Sorry for personal monologue. You shouldn't think of a DNA strand as a long continuous strand when discussing chromosomes. You should just think of it as a collection of strands that are separate and each makes up a chromosome.
The reason that any job exists is because it has to be done. There is a demand for the job being performed.