Why is this molecule nonpolar?

What are charcteristics of lithosphere?

Asap what occurs after cytokinesis is completed at the end of meiosis 1?

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.