Ananthakrishnan an, saeian k. racial differences in liver trans- plantation outcomes in the meld era. am j gastroenterol 2008; 103: 901–910.

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.

Fungi exist as single cells or as branching networks of multicellular filaments. how does the structure of filaments relate to their function