Table 3 Associations of 5 bp insertion in exon 6 of amhΔy and sex distribution in six O. niloticus strains.

From: A duplication of the Anti-Müllerian hormone gene is associated with genetic sex determination of different Oreochromis niloticus strains

O. niloticus strain

Males

Females

amhΔy genotypea

Concordance with sex (%)b

Significancec

Canada

3

0

XY

87

NA

 

1

4

XX

  

Chitralada

33

13

XY

85

*

 

17

137

XX

  

Egypt

3

0

XY

86

NA

 

1

3

XX

  

Ghana

4

0

XY

100

NA

 

0

4

XX

  

Ghana_dor

45

0

XY

100

*

 

0

45

XX

  

Swansea

4

0

XY

90

NA

 

1

5

XX

  

Total

92

13

XY

90

*

 

20

198

XX

  
  1. NA not analyzed due to insufficient samples.
  2. aOccurrence of 5 bp insertion on amhΔy exon 6 (312 bp) designated as “Y,” while its absence (307 bp) designated as “X.”
  3. bNumber of concordant individuals for amhΔy and sex (left to right diagonal) divided by total number of tested individuals.
  4. cChi-squared test for divergence of sex distribution from equality between amh genotypes.
  5. *p < 0.0001.
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