SYSTEMS OF MATING 47 



Fig. 15. Mating of type Dd x Dd. 



D F' d r^ D F' d 



\ D i 17 



l_( ts c s c o'" c o 



\i u 



D s d 



F = r 



so(N) 



l-c s c- l-c c 

 D s Do 



D F' d r' M D F'^d 



\D / N D / 



v / 



'■ c s c s c s'" c s '" c s c s 



V V 1/ 



Ds ds D s 



ss(N) 



i 



X^i 'IN 



D F' d r' N D F' d 



vP/i n / 



D s D s D s 



D F d r' M D F d 

 O / 



\o/ 



•V 



/ 



'* c o c o ( t)'" c o '~ c o c o 



V \l 1/ 



D d D 

 r oo(N) 



D F' d r' N D F' d 



i7i 17 



V ^ * / 

 Do Do D 



r so(I) 



ss(I) 



oo(I) 



Diagrams for analysis of six types of gametic pairs with respect to linked locus. 



In the case of correlations between two spermatozoa or between two eggs, the 

 probabilities that they are produced by the same individual [(l/N m ) in the case of two 

 spermatozoa, (l/N f ) in the case of two eggs] and the probabilities that they are pro- 

 duced by different individuals must be taken into account. 



'«!> = (l/tfmHKl " O 2 + ',*] + &.(1 - C S )F'} 



+ [(N m - l)/JV m ]{[(l - c s ) 2 + c 2 y + 2c s {l - c s )r' N } 



r ss(N) = (\/N m ){[(\ - c s ) 2 + c*]F' + 2c s (l - c s )} 



+ \(N m -l)IN m ]{[(\ - c s ) 2 + c 2 ]r' N + 2c s (\ - cy,}. 



Similarly 



r 00(/) = (1/JV,){[(1 - c ) 2 + c 2 ] + 2c (l - c )F'} 



+ [(N f -\)/N f ]{[(i - o 2 + c 2 y + 2c (i - c y N } 



W) = (W){[(1 - O 2 + c 2 ]F' + 2c (l - c )} 



+ [(N f -\)IN f ]{[(\ - c ) 2 + c 2 y N + 2c {\ - c o y}. 



