The term 'Chromosome Features' refers to the physical characteristics of chromosomes, which are structures found in the nucleus of cells that contain genetic material. The four-letter solution for this term is ARMS, which stands for 'ARMS, ' which are the two protruding ends of a chromosome. Chromosomes are composed of DNA and proteins, and the ARMS are the regions of the chromosome that contain the genetic information. The ARMS are also known as telomeres, and they are important for the stability of the chromosome.