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TABLES.

213

TABLE 16.
Tim DESCENT OF HAZEL-EYED FAMILIES.

 
 

Total

cases.

Observed.

Percentages.

Light.

(Hazel.' Dark.

Light.

Hazel.

Dark.

General population    

4490

2746

569

1175

61.2

12'7

26-1

III. Grandparents   

449

267

61

121

60

13

27

11. Parents    

336

165

85

86

49

25

26

1. Children   

948

430

302

216

45

32

23

TABLE 17.
CALCULATED CONTRIBUTIONS OF EYE-COLOUR.

 
   

Data limited to the

eye-colours of the

 

Contribution to the

heritage from each.

 

2 parents.

4 grandparents.

2 parents

II.

4 grandparents.

III.

and

1.

Light.

 

Dark. Light.

Dark.   Light.

Dark.

Light-eyed parent    

Hazel-eyed parent    

Dark eyed parent    

i ight.eyed grandparent..

Hazel-eyed grandparent.

Dark-eyed grandparent...

Residue, rateably as

signed    

0.30

0'20

...

...

0.28

0.10   ...

0.30   ...

0.18

0.10

...   ...

0-12   0.25

0.25

...   0'16

...   ...

0.08

0.06   0'05

0'16   ...

0.11   0.12

0.09

0.25

0.03

0'08

0.06