The graph below is of directional selection. which statement can be supported by the evidence shown in the graph?

a
directional selection occurs when phenotypes at both extremes of the phenotypic distribution are selected against.

b
directional selection occurs when one of two extreme phenotypes is selected against.

c
directional selection occurs when one of two extreme phenotypes is selected for.

d
directional selection occurs when phenotypes in the middle of the range are selected against.

Which of these organisms have the greatest amount of cell specialized

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.

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into