Can somebody help with this bio question? Normal Legs (N) is dominant to short, stubby legs (n). Show the cross between a Normal, Heterozygous father with a Normal, Heterozygous mother

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.