Which of the best describes using a loading dye for gel electrophoresis? Chose all that apply. There may be more than one answer.
A. does not directly bind to DNA
B. directly binds to DNA
C. used to visualize the DNA after electrophoresis
D. used to monitor the progress of the DNA during electrophoresis

Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

What element does susan b. anthony include in this passage to strengthen her argument?

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time