Which of the following statements is true?

a. The most common biological evidence used in DNA testing is sweat.
b. DNA testing cannot be done on cells that have been dead for more than five years.
c. Inconclusive DNA test results usually means the suspect is guilty.
d. Some DNA tests analyze the mitochondria instead of the nucleus of a cell.

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.