Which of the following MOST influenced Darwin's understanding of natural selection? A. his experience in medical school
B. his religious beliefs
C. his observation of finches
D. his time spent on the HMS Beagle

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.

i would say it is

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.