Homozygous Parental Lines.

1 Parental Lines
2 How to Obtain a Parental Line
  a) Autosomal Trait  
  b) Sex-linked XX-XY
  c) sex-linked ZZ-ZW
3 How to Obtain a Parental Line for a Dominant Allele
a) Autosomal Trait 
b) Sex-linked XX-XY 
c) sex-linked ZZ-ZW
4 How to Breed a Homozygous Line for more than one gene
5 F1 cross
6. Home