1. What types of organisms are most likely to appear in the fossil record? 2. Marsupials evolved in what is now North America, yet their greatest diversity is found in Australia. How can you account for this biographic distribution?
3. What two complications may make it difficult to determine phylogenetic relationships based in similarities between species?

The dna in a cell’s nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell. for example, consider these two proteins: phosphofructokinase (pfk) is an enzyme that functions in the cytoplasm during glycolysis. insulin, a protein that regulates blood sugar levels, is secreted from specialized pancreatic cells. assume that you can track the cellular locations of these two proteins from the time that translation is complete until the proteins reach their final destinations.for each protein, identify its targeting pathway: the sequence of cellular locations in which the protein is found from when translation is complete until it reaches its final (functional) destination. (note that if an organelle is listed in a pathway, the location implied is inside the organelle, not in the membrane that surrounds the organelle.)

How does secondary succession differ from primary succession?

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above