Question

which flowchart correctly organizes the structures of heredity, from least to most complex?
codon gene dna chromosome
gene chromosome codon dna
dna codon chromosome gene
chromosome dna gene codon

Explanation:

A codon is a sequence of three - nucleotide bases in DNA or RNA. Genes are segments of DNA that code for a particular trait. DNA is a long - chain molecule made up of nucleotides. Chromosomes are structures made of DNA and proteins, containing many genes. So the order from least to most complex is codon, gene, DNA, chromosome.

Answer:

A. codon, gene, DNA, chromosome