<span>An electric current is running through the gel in the electrophoresis with positive pole on the bottom. So, only negatively charged particles can migrate through the gel in the electrophoresis. </span>Since DNA is negatively charged, it migrates toward the positive pole of the gel. This characteristic enables DNA to move through the gel.
The more isolated an island is, the lower its species richness will be. An island's size also affects its biodiversity, since larger islands will have a wider variety of habitats, so species that arrive on the island will diversify to fill up the available niches.
If you cut your knee, pus, which is caused by the death of macrophages may form.
It is C) cell-mediated response
