Question

what basic unit of heredity is found on segments of dna and are passed on from parent to offspring?
nucleotide
gene
phosphate molecule
deoxyribose sugar

Explanation:

Genes are segments of DNA that carry hereditary information and are passed from parents to offspring. Nucleotides are building - blocks of DNA, phosphate molecules and deoxyribose sugar are parts of the DNA structure but not the basic unit of heredity.

Answer:

B. gene