172 



Inheritance of Coat Colour in Mice 



Yellow X Agouti gives Yellow and Agouti, 

 Fi yellow x Fj yellow : 



Yellow heterozygous in agouti x black : 



Yellow Agouti 



11 18 observed 



14*5 14*5 calculated 



Yellow X Chocolate-Lilac gives Yellow and Black. 

 Fi yellow x Fi yellow : 



Here there was an excess of champagnes, no blue lilacs and only one 

 chocolate-lilac. 



Fi yellow x Fi black : 



Here there was an excess of chocolate-lilacs, no blue lilacs. 

 Dark-eyed yellow heterozygous in pink-eye x pink-eyed yellow : 



FixFii 



Yellow X Pink-eyed Agouti gives Yellows. 



Dark-eyed Pink-eyed Pink-eyed 



yellow Agouti yellow agouti 



25 17 11 5 observed 



28-8 14-4 9-6 4-8 calculated 



