Today, 33 years ago, on October 1, 1992 (Lunar Calendar, September 6, 1992) the first chromosome chart was published in London. X chromosomes (long) and Y chromosomes (short) compare the first chromosome chart that revealed the mystery of human disease was officially published in London on October 1, 1992. This result is considered a milestone in genetics. According to the British journal Nature, chromosomes are made up of thread-shaped or bar-shaped genetic material, which determines whether a person will suffer from genetic diseases such as cystic fibrous mutation, heart and cancer. A color chart is as important as a map, and can reduce the time you find the defective genes that cause the disease from five years to several months.