Which statements about the phylogenetic tree are true? select all that apply. select all that apply. mammals and turtles are more closely related than are lungfishes and sharks. hagfishes, lungfishes, and frogs have lobed fins. lancelets and coelacanths are more closely related than are chimaeras and coelacanths. organism (a) is a common ancestor of all chordates. descendants of organism (d) have limbs with digits. birds and ray-finned fishes have a notochord and jaws. rays and frogs have vertebrae. organism (c) is a common ancestor of lampreys and lungfishes?

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?

One of the newest applications of cell technology is called cybrid embryos. this process involves replacing the nuclear material of an animal cell with human nuclear material. how might this process affect public policies about research by using stem cells? the same policies and concerns about the use of human embryonic stem cells would most likely apply. the embryos would most likely be treated like traditional animal embryos and regulated accordingly. the process of forming cybrid embryos would most likely be banned by government regulators. the embryos would be treated as regular cells because they are not fully human in origin.

An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil