It's not possible to truly understand parblue genetics
until one understands how multiple alleles work.
It's a lot to explain in a post.
There's a nice article about the bl locus
in the next 'Agapornis Magazine' from the BVA.
For the sake of "easier to understand"
I'll call parblue turquoise, which it is.
Turquoise x turquoise =100% turquoise
Turquoise x green =100% green/turquoise
Turquoise x green/turquoise =
50%chance turquoise
50% chance green/turquoise
Turquoise x green/blue =
50% chance green/turquoise
50% chance TurquoiseBlue
Green/turquoise x green/turquoise =
50% chance green/turquoise
25% chance turquoise
25% chance green
Green/turquoise x green/blue =
25% chance green/blue
25% chance
green/turquoise
25% chance
TurquoiseBlue
25% chance green
Turquoise x blue =
100% TurquoiseBlue
TurquoiseBlue x green =
50% chance
green/turquoise
50% chance green/blue
TurquoiseBlue x blue =
50% chance TurquoiseBlue
50% chance blue
TurquoiseBlue x green/blue =
25% chance green/turquoise
25% chance green/blue
25% chance TurquoiseBlue
25% chance blue
TurquoiseBlue x green/turquoise =
25% chance green/turquoise
25% chance green/blue
25% chance TurquoiseBlue
25% chance turquoise
TurquoiseBlue x TurquoiseBlue =
50% chance TurquoiseBlue
25% chance turquoise
25% chance blue
That's virtually all the outcomes possible involving the
turquoise(parblue) mutation,
as well as combinations with blue.
