What could Carl Linnaeus no have used as a method of classification in his taxonomy system ? A. DNA
B. the habitats of organisms
C. structure of organisms
D. apperance of organisms

A. DNA

Explanation: can i have :))

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.

b is dominant over the allele for the white fur.