Final answer:
The correct order from smallest to largest genetic units is nitrogen base, nucleotide, codon, gene, and chromosome. These are all units of genetic material which are part of the larger DNA structure, with a nitrogen base being a component of a nucleotide, and so forth up the hierarchy.
Step-by-step explanation:
The student's question appears to involve ordering sets of entities based on size. Given the content, we are likely dealing with mathematical or scientific units rather than geometrical sides since UT, TV, and VU are not standard notations in mathematics for denoting sides of a figure. For clarity and precision, I'll refer to the REVIEW section which closely mirrors the format of the question.
The correct order from smallest to largest, based on typical scientific understanding, is as follows:
- Nitrogen base
- Nucleotide
- Codon
- Gene
- Chromosome
Each of these terms are units of genetic material, with a nitrogen base being part of a nucleotide, which in turn is part of a codon. Multiple codons form a gene, and multiple genes are housed within a chromosome.