Table 1. Distribution of X-inactivation... | American Society of Hematology

Table 1.

Distribution of X-inactivation patterns in Scandinavian twins and singletons

	Blood donors¹¹	Elderly singletons¹²	Elderly twins	Centenarians
N	148	43	142	33
Age range	19-65	83-101	73-93	101
X-inactivation pattern (% of persons)
Random (most common X ∈ [50%; 80%[)	93	65	65	33
Skewed (most common X ∈ [80%; 95%[)	7	26	27	49
Extremely skewed (most common X ∈ [95%; 100%])	0	9	8	18

	Blood donors¹¹	Elderly singletons¹²	Elderly twins	Centenarians
N	148	43	142	33
Age range	19-65	83-101	73-93	101
X-inactivation pattern (% of persons)
Random (most common X ∈ [50%; 80%[)	93	65	65	33
Skewed (most common X ∈ [80%; 95%[)	7	26	27	49
Extremely skewed (most common X ∈ [95%; 100%])	0	9	8	18