Gregor Mendel performed a cross between a pure-breeding tall plant and a pure-breeding short plant. He observed that the resulting offspring were all tall. Given this information, it can be inferred that: the allele for tall plants is recessive and none of the offspring received an allele for short height.

the allele for short plants is dominant and all of the offspring received an allele for tall height.

the allele for tall plants is dominant and all of the offspring received at least one allele for tall height.

the offspring were all pure-breeding like the parent plants.

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.)

What causes darkening of the skin as melanin production increases

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.