ID#: 12511
This photographic collage depicts the karyotype that would represent the chromosomal configuration seen in a person with Down syndrome (DS). In this particular case, the cells in a person with DS, contain an extra chromosome 21, and is therefore, known as Trisomy 21 (arrow). A karyotype represents a complete set of chromosomes in each and every eukaryote cell of an individual organism. The chromosomes are arranged in pairs, and aligned using the position of each chromosome’s centromere. Pairs are then arranged into groups A through G, based on size. Group G contains the extra 21st chromosome.
High Resolution: Click here for hi-resolution image (6.87 MB)
Content Provider(s): CDC/ Dr. Clark Heath
Creation Date: 1967
Photo Credit:
CDC Organization
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.