You either do not have a Javascript capable browser, or have Javascript turned off. Please either upgrade to Netscape 4, Internet Explorer 4 or higher, or turn Javascript back on if you already have one of these.

Introductory Animal Genetics
Animal Science 221

Law of Independent Assortment

A spotting pattern in horses, called Tobiano, is the phenotype associated with a dominant allele (designated T). The recessive genotype, tt, produces a solid coat color, that is no spotting.

Match the expected ratio, listed below, with each of the following matings:

 

1
F1 x F1   
2 F1 x Solid   
3 F1 x Homozygous Tobiano   
4 Solid x Solid   
Expected Ratios: A = All solid
B = All Tobiano
C = 3 Tobiano : 1 Solid
D = 3 Solid: 1 Tobiano
E = 1 Tobiano: 1 Solid



Return to: Animal Science 221

Home page: Animal Science at Cornell University


For problems or comments on this web page, contact the Animal Science Webmaster