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A chromosome is a thread-like structure made up of DNA and proteins found in the nucleus of cells. It carries the genetic information that determines the traits and characteristics of an organism.

A chromosome is a narrow, thread-shaped entity consisting of both DNA and proteins. It resides within the nucleus of cells and contains the hereditary data responsible for an organism's traits and qualities.

A chromosome, located in the nucleus of cells, is a structure resembling a thread. It is composed of both DNA and proteins. Its primary role is to hold the genetic material that governs an organism's traits and characteristics.