When males reach a certain age the body begins the process of puberty how does the body control this process?

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.

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

Nh3 +02-no + h20 is unbalanced what is the balanced equation