Final answer:
A karyogram is a photographic image where chromosomes are arranged in numerical order, which assists in analyzing an individual's karyotype for genetic information.
Step-by-step explanation:
A karyogram is a picture of the nuclear structures, or chromosomes, arranged in numerical order. Chromosomes are threadlike structures made up of DNA and proteins, and they carry genetic information. To produce a karyogram, cytologists capture photographs of the chromosomes, often during cell division when chromosomes are most visible, and organize them into a chart according to their number, size, banding patterns, and centromere positions. This enables the detailed study of an individual's karyotype, which is crucial in understanding genetic conditions, the life cycle of organisms, and processes such as meiosis which lead to the production of gametes.