There are about 4000 common variations in DNA that affects a persons height, they usually only make the difference of 1 or 2 millimeters up or down. However, there has been a gene variant in about 5% of Peruvians that reduces height by approximately 2.2 centimeters. The variant is located on the FBN1 gene, which produces a protein that aids in the forming or bone, connective tissue, skin and other tissues.
Source 1: https://www.sciencenews.org/article/gene-variant-height-peruvians-short
Source 2: https://www.medicinenet.com/script/main/art.asp?articlekey=33167
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