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Although chromosome 21 is slightly larger than 22 historically, the Denver System orders primarily by size but groups acrocentric chromosomes together. Both 21 and 22 are acrocentric and very short, so they fall into Group G. The numbering (21 vs. 22) is a historical artifact based on earlier technology; under the microscope, they look similar in size and shape.
The (established in 1960) is the standard classification system used to organize human chromosomes into a karyotype. A karyotype is an organized profile of an individual's chromosomes. In a standard worksheet, you are typically asked to match chromosomes from a "scrambled" image into this specific order. denver system worksheet karyotype answers
Medium-sized; submetacentric. (X is the larger sex chromosome). Although chromosome 21 is slightly larger than 22