Most direct evidence of evolutionary relationships between animal species comes from comparing

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 type of stimulus do mechanoreceptors detect? sound pain heat light

Agroup of organisms that changes over time is said to