Gel electrophoresis separates fragments on the basis of weight and electric charge. Heavier and/or positively charged fragments don't go as far as lighter and/or negatively charged ones.
Answer:
C
Explanation:
When two species share a common niche, then one is bound to exclude the other. This is due to the stiff competition for resources. The species with a slight advantage in acquiring the resources will edge out the other species from the environment. This has been demonstrated by George Gauss using two Paramecium species grown in the same media in the lab. <em> P. aurelia</em> outcompetes <em>P. caudatum</em>
I think it A I hope this help
