What term describes the complete set of genetic material within an organism?

The term that describes the complete set of genetic material within an organism is "genome." A genome encompasses all of an organism's DNA, including its genes and the non-coding sequences of DNA. It provides the comprehensive information necessary for the growth, development, and functioning of that organism.

In contrast, "genotype" refers specifically to the genetic makeup of an individual, usually concerning a particular trait, rather than the entire set of genetic material. "Karyotype" describes the number and appearance of chromosomes in the nucleus of a eukaryotic cell, which is a part of the genome but does not represent the complete set. "Locus" denotes a specific location or position of a gene on a chromosome, which is just a small component of the overall genome. Understanding these distinctions clarifies why the complete set of genetic material is specifically identified as the genome.