A: None of the potential offspring would be male, because the potentially male zygote would have two X chromosomes, and the Y chromosome would be ignored. B: The male offspring would all be red-green color-blind, because of interference from alleles on the Y chromosome.

C: The male offspring would have full-color vision, because of the presence of the extra X chromosome

D: There would be no change to the phenotypes of the possible offspring, because the extra X chromosome would not be active.

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.