Charles darwin studied finches on the galapagos islands. while the finches on all the islands came from the same ancestors, the distance between the islands was too great to allow finches from different islands to interbreed. over time, the size of the finches on the different islands remained the same, but the shape and size of their beaks changed, as shown here. this adaptation the finches find food on their particular island. the change in the size and shape of the finches’ beaks was most likely caused by

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.

the answer is c.

by: nicholas dooley