What I've learnt about Genome Sequence

In our DNA there are 4 letter that make us. The letter are A,G,T and C DNA is like a computer code. If your DNA is not right, Some-thing could happen any; time in your life. When we are sleeping our genome is still doing working. All of us have glitches but some of us ave glitches that cause's health problems. If a scientist take's some blood from you they could put it in a machine that help's them check your DNA. Scientist compare your sequence to thousands of people maybe even your relatives.