GENETICS OF GOULDIAN FINCHES
(The White Breast)
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Mating of White Breasted with Purple Breasted Gouldian Finches
Nor Male ( hom) and
Nor Hen (het)

50 Normal ( het)
50% Nor (hom)


hom

hom

hetrozygous

aka Pb/Wb

Nor Male ( het) and
Nor Hen (het)

                               split white breast

50% Wb    25% Nor ( hom)
25% Nor ( het)



hom


                                                         het



WB male and
Nor Hen (hom)

100% Nor (het)


het

Wb male and
Nor hen (het)

50% Nor (het)
50% Wb

het


Wb Male and Wb female

100% Wb



 

LEGEND:
het: heterozygous ( carrying more then 1 mutational characteristic in this instance Pb/Wb  aka split  )
hom: homozygous ( carrying no mutational characteristics a.k.a. as pure or Pb in this case)
Nor: nor ( wild coloured ( purple breast, green back homozygous))
Wb: White Breasted

This recessive autosomal gene found in gouldian finches is the most recessive of all gouldian finch breast genes.
This recessiveness is quite desired by most as white breasted gouldians are more prized generally, and so some may impatiently  pair two white breasted lady gouldians together in the hopes of getting a clutch of 100% white breasted gouldian finches not realizing that with this extremely recessive gouldian gene can come some other extremely recessive traits.
The order of dominance is as follows:
-Purple breasted
-Blue Breasted
-Rose
-Lilac
-White

Most show breeders will avoid pairing white breasted gouldian finches to white breasted gouldian finches  as it invariably leads to smaller less robust offspring.

The white breasted gene is best expressed by pairing two heterozygous ( a.k.a. split white breasted) gouldian finches together a seen in the above chart.


Click Thumbnails for full picture view

white breasted normal
blue wb
yellow wb in flight
Here you see clockwise ( l to right):
-normal black headed lady gouldian finch
-blue black headed lady gouldian finch
-yellow red headed lady gouldian finch




copyright: Lady Gouldian Finch Canada 2004

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