1. Pure breeding haired mouse
H
H
P generation of mice
Body cells
x
MEIOSIS
H
Reproductive cells
Pure breeding hairless mouse
h
h
MEIOSIS
h
FERTILISATION
H
h
MITOSIS
F1 generation of mice
Fertilised egg cells = body cells
2. Hybrid haired mouse
H
h
OR
H
Body cells
x
MEIOSIS
H
Hybrid haired mouse
F1 generation of mice
MEIOSIS
H
Reproductive cells
h
h
OR
h
FERTILISATION
H
H
H
h
Body cells
H
MITOSIS
F2 generation of mice
h
h
h