Ageologist finds an unidentified fossilized rock in a box in the attic. what type of dating would the scientist attempt to use to determine the age of the rock?

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.