Microscopes led to the discovery that all organisms are

What is the number of phosphates in an atp molecule

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.

Where does the esophagus lead to in a frog?