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Unique Avian Solutions
for Breeding, Genetics,
and Companion Parrots

Genetic Charts

Just plug in the colors as necessary
May be used for cockatiels and other hookbilled parrots

Autosomal Dominant Mutation Chart

©1998 Linda S. Rubin

CF Genetics Consultant & Panel Judge
“All Rights Reserved” by Author.
Written permission from author required for reprints.

First published in Cockatiels in Color by the author

Breeding Expectations for Autosomal Dominant
and Recessive Mutations

Note: Because these mutations are NOT sex-linked, gender is irrelevant
and therefore not linked to a bird's sex.

Dominant x Split Recessive	50% Dominant
	50% Split Recessive

Dominant x Recessive	100% Split Recessive (heterozygous)

Split Recessive x Split Recessive	25% Dominant
	50% Split Recessive
	25% Recessive

Split Recessive x Recessive	50% Split Recessive
	50% Recessive

Recessive x Recessive	100% Recessive (homozygous)

Autosomal Dominant Genetic Chart Autosomal Co-Dominant Genetic Chart Autosomal Recessive Genetic Chart Sex-linked Recessive Mutation Chart

The following charts are printed here merely as a reference for calculating one mutation at a time and should not be confused with the charting
methods used in COCKATIEL GENETICS MADE EASY, which uses a line-charting method for any number of color mutations within the
same pair. However, these "general" charts have been selectively restated in the style that I have used in one of my other books, Cockatiels
in Color for those wishing to check simple pairings, or to check their work "one mutation at a time."