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Table 1 Coefficients of relatedness by common descent of autosomal genes (R) and genomically imprinted genes inherited from father (R p ) and mother (R m ) in non-kin and close-kin families

From: Breast cancer protection by genomic imprinting in close kin families

Marriage

Women units with

R

R p

R m

Random

Non-kin

   

Double first cousin

Father’s brother’s and mother’s sister’s son

0.25

0.25

0.25

 

Father’s sister’s and mother’s brother’s son

0.25

  

First cousin

Father’s brother’s son

0.125

0.125

 
 

Father’s sister’s son

0.125

  
 

Mother’s brother’s son

0.125

  
 

Mother’s sister’s son

0.125

 

0.125

First cousin once removed

Father’s paternal uncle’s son

0.0625

0.0625

 
 

Father’s paternal aunt’s son

0.0625

  
 

Father’s maternal uncle’s son

0.0625

  
 

Father’s maternal aunt’s son

0.0625

  
 

Mother’s paternal uncle’s son

0.0625

  
 

Mother’s paternal aunt’s son

0.0625

  
 

Mother’s maternal uncle’s son

0.0625

  
 

Mother’s maternal aunt’s son

0.0625

 

0.0625