Professor Lupin was checking Ron's DNA by examining a specimen of his blood. Professor Lupin was able to observe Ron's

Question

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Professor Lupin was examining Ron's DNA, which contains the genetic information that determines his genotype.

Answer: D) molecular code. 
 DNA is a molecule made up of a specific code of nucleotides, which contain the molecular information that determines an organism's traits. By examining Ron's blood, Professor Lupin was able to analyze his molecular code.

Professor Lupin Was Checking Ron's DNA by Examining a Specimen