Look at the sketches. The sketch on the left is of a
fish embryo, and the sketch on the right is of a pig
embryo.
Which of the following statements is the best
explanation for why the embryos look so similar,
considering how different an adult fish and pig
are?
O
Fish and pigs both need gills.
Fish and pigs are both mammals.
-Fish and pigs share a common ancestor.
-Fish
-Pig