A control is a experimental variable that is kept constant or unchanged during an experiment. During a controlled experiment, the controlled variables are held constant to minimize or stabilize their effects on the subject, its unchanging state allows the relationship between the other variables being tested to be better understood.
Answer:
(1) digestion with restriction enzyme,
(2) electrophoresis,
(3) Southern blotting,
(4) hybridization with a radioactive probe,
(5) process with X-ray film.
Explanation:
DNA typing is the forensic analysis of genetic information from a biological sample as an aid to identification.
Answer:
Explanation:
Nucleotides are building blocks of nucleic acids (DNA and RNA). A nucleic acid contains a chain of nucleotides linked together with covalent bonds to form a sugar-phosphate backbone with protruding nitrogenous bases. For example, DNA contains two such chains spiraling round each other in the famous double helix shape.
