Which flow chart correctly organizes the structures of heredity, from least to most complex?

Acodon ® gene ® DNA ® chromosome
Bgene ® chromosome ® codon ® DNA
CDNA ® codon ® chromosome ® gene
Dchromosome ® DNA ® gene ® codon

Verified Answer :

The answer is A. codon ® gene ® DNA ® chromosome.

Codons are base triplets (three nucleotide bases) on DNA.
Genes are sequences of DNA that typically contain the code for
a particular protein. 
DNA is a two-stranded helix consisting of nucleotides.
Chromosomes consist of DNA molecule that is packaged into thread-like structure.

The structures of heredity,from least to most complex is A)codongeneDNA*chromosome.