Question

although all organisms share the same four nucleotides, it is the _________ of these nucleotides that makes each species unique.
shape
distance
sequence
growth
quantity

Explanation:

Nucleotides are the building blocks of DNA. The order (sequence) of these nucleotides in DNA encodes genetic information. Different sequences lead to different genetic traits, which is what makes each species unique. Shape, distance, growth, and quantity of nucleotides do not play the key role in determining species - uniqueness in the context of genetic information.

Answer:

C. sequence