Within the amish community is an unusually high frequency of the gene that causes polydactylism (having 6 digits on one or more hand or foot). the frequency is much higher than in the original european countries from which amish settlers arrived. this is an example of __
a. stabilizing distribution
b. founder effect
c. sexual selection
d. bottleneck effect

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.