This was a small example to learn concepts, and it is much smaller than real genes. in a real gene, the exons average about 150 bases each and are almost always less than 400. introns can be highly variable in length but may be hundreds of bases. a small gene might have 4,500 bases and many exons and introns. remember that in this activity, each square was used to represent one base. one or two exons or introns might fill up a sheet of graph paper. how many pages would you need to represent a small gene of 4,500 bases? (figure out or count how many squares are on one sheet of graph paper. then figure out how many sheets would have 4,500 squares.)

The endoplasmic reticulum (er) is an organelle in some cells. in these cells, it is continuous with the nuclear membrane and forms a large part of the cell\'s total membrane. sort the phrases below as describing rough er, smooth er, both, or neither. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the phrases are sorted incorrectly.1) found in prokaryites and uekaryotys2) involved in protein synthesis3) involve in lipid synthesis4) contains molecular chaperones in lumen5) bound with ribosomes6) involved in toxin or drug metabolism7) large systemot internnected tubules,vesicles, and sacs8) "packages" enzymes in vesicles for secretion.

Describe five factors that influence the value of fuel

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.