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Table 1 Chi square analyses of genotypes produced from heterozygous and hemizygous crosses

From: A series of N-terminal epitope tagged Hdh knock-in alleles expressing normal and mutant huntingtin: their application to understanding the effect of increasing the length of normal huntingtin’s polyglutamine stretch on CAG140 mouse model pathogenesis

Genotype # Observed (# Expected) χ2(P)
Cross: Hdh3xFlag7Q/+ X Hdh3xFlag7Q/+
+/+ 16 (23)     1.69 (0.429)
3xFlag7Q/+ 51 (46)  
3xFlag7Q/3xFlag7Q 26 (23)  
Cross: HdhHA7Q/+ X HdhHA7Q/+
+/+ 16 (20)     1.01 (0.603)
HA7Q/+ 39 (40)  
HA7Q/HA7Q 25 (20)  
Cross: Hdh3xFlag20Q/+ X Hdh3xFlag20Q/+
+/+ 6 (6) 0.0697 (0.966)
3xFlag20Q/+ 12 (12)  
3xFlag20Q/3xFlag20Q 5 (6)  
Cross: Hdh3xFlag7Q/+ X Hdh+/-
+/+ 2 (4)     1.15 (0.765)
3xFlag7Q/+ 6 (4)  
3xFlag7Q/- 4 (4)  
+/- 5 (4)  
Cross: Hdh3xFlag140Q/+ X Hdh3xFlag140Q/+
+/+ 9 (10)     2.03 (0.362)
3xFlag140Q/+ 24 (20)  
3xFlag140Q/3xFlag140Q 5 (10)  
  1. The observed and expected numbers of the homozygous and hemizygous progeny are in bold.