Oxidation of minerals, warm and wet conditions, and the reactions of water with parent material are all components of

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.

Which of the following organisms are capable of self-fertilization? a.plants b.tigers c.humans

Idon’t understand this can someone give me the answer? you