Selection and cross-breeding in relation to the inheritance of coat-pigments and coat-patterns in rats and guinea-pigs

Continuous versus discontinuous variations as factors in evolution .... i Variations of rats in coat-color and coat-pattern Mendelian inheritance of coat-colors and coat-patterns in rats Albinism recessive in relation to all types of pigmentation Latent pigment characters and coat-patterns Modification of hooded pattern by crossing with Irish 1 Modification of hooded pattern by selection Selection for reduced stripe Selection for stripe of increased size Individual spots of guinea-pigs not unit characters Color-patterns selected 1 Dutch-marked series (Series D) 20 Head -spot series (Series H) 23 Statistical analysis of the data for Series D and // Nose-spot series (Series N) Conclusions 32 Tables 34 Bibliography 50 in