Hi , a scientific concept is a scientific theory or law that explains why and how a natural event or process occurs.
Answer:
B. The smaller DNA pieces travel farthest towards the positive end of the box
Explanation:
Gel-electrophoresis technique is a technique which is used to separate the fragments of DNA based on their size. The technique is employed in the DNA fingerprint analysis.
The DNA samples are loaded on one side of the gel and when an electric current is applied, the DNA moves from the wells towards the electrodes.
The DNA is a negatively charged molecule which travels through pores in the gel and reaches towards the electrode with positive charge.
The smaller the size of the DNA fragment, the faster it moves.
Thus, Option-B is correct.
The answer is B.
Which is “When the air is in the respiratory
medium, there is a greater risk that the tracheal tubes will collapse. The
cartilage in the respiratory system gives support
to the tubes against negative or positive
pressure, during respiration, hence keep
it open.
I would say C.
The numbers on the map range from 48-64, so this shows that the trees need no more than 64 inches (so not answer choice d)
and no less than 48, since 48 is between 30-50, the answer is C.
D. species.. humans and chimps are not the same species.
