Phased
From SNPedia
Phased data is able to distinguish strands of DNA. Full genome sequencing technologies can usually capture this, however a microarray typically cannot. It is (mostly) possible to infer phase, if microarray data from the mother and father is also available.
http://www.chromosomechronicles.com/2009/09/30/use-family-snp-data-to-phase-your-own-genome/
Question: what are phased and unphased genotypes?
https://www.pacb.com/blog/new-cattle-genome-overcomes-challenges-haplotype-assembly/
