The McDonald Kreitman tests of genes in the human and chimpanzee genomes showed many with an excess of nonsynonymous variation within species. Dr. Noor suggested this means that many mutations are sticking around but not getting fixed. In class, Dr. Noor suggested this was probably the result of the inability of our species to eliminate some detrimental mutations. Why is this elimination difficult

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.)

Which ocean is on the eastern coast of north and south america? arctic ocean indian ocean pacific ocean atlantic ocean

What is the process by which biological parents pass traits such as hair type or eye color to their children