rozella białolica rozella białolica

eastern rosella

Platycercus Eximius

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Preface

The colors of parrots

Types of mutations

Sex-linked Recessive

Autosomal Recessive

Dominant

Combinations of mutations

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Types of mutation


Sex-linked Recessive Mutation

1,0 opal

In Sex-linked Recessive Mutation bird sex is important. In these mutations only males can be split. Birds called split are “vaccinated” for the given mutation. They can arise in the so-called F1 generation as a result of matching representative given mutation or split with the second split or bird naturally colored. Splits are colored naturally, but in their genetic code information about the mutation which thanks to proper associating can become apparent is also written in the next called F2 generation.

In recessive mutations linked with the sex having only a male which is split or representative of the given mutation we can raise mutant offspring – these will be females. Having females of the given mutation we will raise males which will be split for the given mutation. In order to raise male mutation his mother must be a representative of the given mutation and a father at least split for this mutation. In recessive mutations linked with the sex females of the split don’t occur. With a red male and rubino female we will receive all red males of the split in the ino gene. All females will also be red, but won't be split in the ino gene.


Inheriting mutation linked with the sex:


1,0 mutation x 0,1 mutation
100% 1,0 mutation
100% 0,1 mutation


1,0 mutation x 0,1 normal
100% 1,0 normal/mutation
100% 0,1 mutation


1,0 normal/mutation x 0,1 mutation
50% 1,0 mutation
50% 1,0 normal/mutation
50% 0,1 mutation
50% 0,1 normal


1,0 normal/mutation x 0,1 normalny
50% 1,0 normal/mutation
50% 1,0 normal
50% 0,1 mutation
50% 0,1 normal


1,0 normal x 0,1 mutation
100% 1,0 normal/mutation
100% 0,1 normal


normal – bird with natural coloration
mutation – bird with mutation coloration
normal/mutation – split i.e. the bird vaccinated for the given mutation
1,0 – male
0,1 – female


niebieski australijski

Autosomal Recessive Mutation

Mutations autosomal recessives universally are called recessive. In contrast with mutations linked to the sex in recessive mutations the bird sex doesn’t means, since males and females can be split. If only get specimen mutation, both parents (male and female) must be representatives of the given mutation or at least split for this mutation.



Inheriting the recessive mutation


mutation x mutation
100% mutation


mutation x normal
100% normal/mutation


mutation x normal/mutation
50% mutation
50% normal/mutation


normal/mutation x normal/mutation
25% mutation
50% normal/mutation
25% normal


normal/mutation x normal
50% normal/mutation
50% normal


normal – bird with natural coloration
mutation – bird with mutation coloration
normal/mutation – split i.e. the bird vaccinated for the given mutation


Dominant Mutation

1,0 białoskrzydły opalowy

Although that in domination mutations split don’t occur, exactly in these mutations we can most easily raise mutation offspring. Cross-breeding bird of the mutation domination irrespective of the sex with the bird normally colored, already some raise young can be representatives of the mutation. Remaining young will be normally colored.

In the domination mutation we can distinguish two variants:
- complete (full) dominance,
- incomplete dominance (co-domination)

At incomplete dominance a difference appears in individuals color singles factor – SF and double factor – DF. Differences in coloring at SF birds and DF don’t appear in the complete dominance. Possible differences can be caused by different breeding lines.


Inheriting the dominating mutation


mutation DF x mutation DF
100% mutation DF


mutation DF x mutation SF
50% mutation DF
50% mutation SF


mutation DF x normal
100% mutation SF


mutation SF x mutation SF
25% normal
50% mutation SF
25% mutation DF


mutation SF x normal
50% mutation SF
50% normal


normal – bird with natural coloration
mutation – bird with mutation coloration
SF – singles factor birds have in the genotype per one gene responsible for the mutation
DF – double factor birds have in the genotype per two genes responsible for the mutation

© Paweł Pawłowski
A.D. 2010
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