3.A subunit of DNA that consists of a sugar, a phosphate, and a nitrogenous base
A. Thymine
B. Nucleotide
C. Amino acid

thymine

Explanation:

thymine is in the DNA

Nucleotide

Explanation:

Thymine is a nitrogen base, and amino acid is a building block for protein.  A nucleotide is made up of a sugar, a phosphate, and a nitrogenous base.

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

answer; i believe that the correct answer is(d) nondisjunction during meiosis;