The statement "energy is conserved" means that A. Energy cannot be destroyed or created.
B. The total amount of energy in the universe remains the same.
C. All of these
D. Energy is not lost, but it can change form.

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.