Answer:
A gene is best described as a section of DNA that serves as the basic unit of heredity.
Step-by-step explanation:
A gene is the molecular unit of heredity in living organisms. Furthermore, a gene is the segment or section of a Deoxyribonuceic acid (DNA) that contains instructions for specific molecules (usually proteins). Genes hold the information to build and maintain an organisms cell and pass genetic traits to offsprings.
Genes occupy fixed positions (loci) on a chromosome ( a DNA and histone complex). They are sequence of bases combined in a unique way to determine its function.
In sexual-reproducing organisms, traits are passed down from parents to offsprings through genes that get separated into gametes during meiosis or are passed via other asexual means e.g. cell division etc.