Using traditional classification methods, which of the following sets of organisms would be the most difficult to classify?
-Two organisms that look nearly identical
-Three organisms that are about the same size
-Three organisms that live very close to each other
-Four organisms that eat similar foods

D.)

Explanation:

Cladograms can compare more animals at one time than traditional classification methods.

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.

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