For infants homozygous for the «long» allele (l / l), there was no association between maternal responsiveness and attachment security or disorganisation. (capmh.biomedcentral.com)
The most severe abnormalities occur in homozygous merles with an excessive white hair coat involving the head region. (eyecareforanimals.com)
The dog breeds listed have a frequency of homozygous for SOD1 (affected DM) between 33 - 90 %. (vetneurochesapeake.com)