What are the advantages of using a classification key when identifying organisms

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 is not considered an appendage of the skin? nails glands follicles none of the above

Organisms that successfully adapt will leave to grownone of the above