Tianwei Ma
Answer of the questions
AP BIO
1/15/15
4.a) Reproductive isolation by prezygotic barriers (different habits of life, different
behavioral etc.) and leads to the development of separate species from a common ancestor.
1. b) Fossils, anatomy, and behavioral. The fossils use to find the time period; the
anatomy use to find the structure of the body; the behavioral use to know the habit
of the species.
c)- In the tree I, camel is the closest relative to wheal; but in the Tree II, the hippo is the
animal has the closest relationship with wheal. The pulley astragalus was gained in the
Tree II.
– Tree I is the best representation of the evolutionary relationship of these animals, because
it perfectly described the different type of animals, and separated them by the evolutionary
way.