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DNA microarrays identify specific DNA sequences by:?
A. GFP-labeled fragments on the array bind with complementary DNA from the sample that
has been broken into fragments
B. Sample DNA is broken into fragments, and the double stranded DNA binds
complementary GFP-labeled DNA sequences on the microarray
C. Sample DNA is broken into fragments, strands are separated and labeled with GFP.
These DNA molecules bind to identical DNA sequences on the microarray
D. Sample DNA is broken into fragments, strands are separated and labeled with GFP, and
these DNA molecules bind to complementary DNA sequences on the microarray.
cant for the life of me figure this one out.
3 Answers
- 1 decade agoFavorite Answer
Here:
A DNA microarray works by consisting of a large number of single stranded DNA fragments fixed to a slide. A piece of sample DNA is taken, broken into fragments, and then separated so it, too, is single-stranded. It is labeled with GFP (green fluorescent protein, a protein that emits green under a fluorescent light), and then placed on the slide. This single strand will bind to a complementary pair on the DNA microarray, and then allow researchers to determine what the sequences are based off of which sequence on the microarray it bonded to.
Thus, the answer is D.
Source(s): I'm actually reviewing this right now for a biology exam in 10 hours. - Anonymous5 years ago
DNA is a set of blueprints for the structure or all living organisms. DNA has moleules which contain the information that relays (Messenger RNA) to the cells how to make the new cell (Replicant RNA). DNA keeps the genetic code in place so the correct messages are carried out in the production of new cells. This is why your hair colour remains the same, your skin cells are replenished, in the bone marrow where the red and white blood cells are produces to not change from O positive to AB negative, and how much fat to store in the body. Deoxyribonucleic acid, or DNA, is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms. The main role of DNA molecules is the long-term storage of information and DNA is often compared to a set of blueprints, since it contains the instructions needed to construct other components of cells, such as proteins and RNA molecules. The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in regulating the use of this genetic information.