Genetics Chart

Another page by Nick Siders

Genetics

 

Some basic things and a few definitions:

The Cock Bird can be covering another of the basic colors which are ash-red, blue/black, and brown while the Hen covers no other color.  She is what you see while the Cock can be ash red, but is also covering blue for example.  Because of this the outcome of the youngsters color will be affected.

Sex Linked: 

(1) Pertaining to a gene located in the sex chromosome (especially an X chromosome).

(2) Pertaining to a character or trait determined by gene(s) located in the sex chromosome(s).

Indigenous:  What existed in the breed once declared a breed.

Dilute:  To make fainter as in a color.  It is  sex linked

  • Dilute of Black is Dun
  • Dilute of Blue is Silver
  • Dilute of Red is Yellow
  • Dilute of Brown is Khaki, but it is not indigenous to Birmingham Rollers.

Color patterns are:  

  • Self
  • T-Pattern
  • Checkered
  • Barred
  • Barless, it is not indigenous to the Birmingham Roller

Self there is no terminal tail bar.  Self colors are usually found as black or dun.  Recessive Red and White are self’s.

T-pattern Like the self is a solid color all over except there is a terminal tail bar.  Checkered and Barred also have a terminal tail bar.

 

 Cock

 Hen

 Cock Youngster

 Hen Youngster

 Ash Red (Sex Linked)

 Ash Red

 100% Ash Red

 100% Ash Red

 Ash Red

Blue

100% Ash Red Carrying Blue
100% Ash Red

 Ash Red Carrying Blue

Ash Red
50% Ash Red (Pure)
50% Ash Red Carrying Blue
50% Ash Red
50% Blue

 Ash Red Carrying Blue

Blue

50% Ash Red Carrying Blue
50% Blue
50% Ash Red
50% Blue

 Blue (Sex Linked)

 Ash Red

 100% Ash Red Carrying Blue

 100% Blue

 Blue

 Blue

 100% Blue

 100% Blue

 Dilute is sex linked and a recessive gene

 

 

 

 Non-dilute

 Dilute

100% Non-dilute Carrying Dilute

 100% Non-dilute

 Dilute

 Non-dilute

 100% Non-dilute Carrying Dilute

 100% Dilute

 Dilute

Dilute

 100% Dilute

 100% Dilute

 Non-dilute Carrying Dilute

 Non-Dilute

 50% Non-dilute

50% Non-dilute Carrying Dilute

50% Non-dilute
50% Dilute

 Non-dilute Carrying Dilute

 Dilute

 50% Dilute

50% Non-dilute Carrying Dilute

50% Non-dilute
50% Dilute

 Grizzle

Non-grizzle

 50% Grizzle

50% Non-grizzle

 50% Grizzle

50% Non-grizzle

 Grizzle

 Grizzle

 50% Heterozygous Grizzle

25% Homozygous Grizzle

25% Non-grizzle

50% Grizzle Heterozygous
25% Homozygous Grizzle
25% Non-grizzle

 Homozygous Grizzle

 Non-grizzle

 100% Heterozygous Grizzle

 100% Heterozygous Grizzle

 Homozygous Grizzle

 Heterozygous Grizzle

 50% Heterozygous Grizzle

50% Homozygous Grizzle

50% Heterozygous Grizzle
50% Homozygous Grizzle

 Grizzle is not sex linked so cock and hen are interchangeable

 

 

 

 Recessive Red

 Non-recessive Red

 100% Non-recessive Red Carrying Recessive Red

100% Non-recessive Red Carrying Recessive Red

 Non-recessive Red

Recessive Red

 50% Recessive Red

50% Non-recessive Red Carrying Recessive Red

 50% Recessive Red

50% Non-recessive Red Carrying Recessive Red

 Non-recessive Red Carrying Recessive Red

 Non-recessive Red Carrying Recessive Red

50% Non-recessive Red Carrying Recessive Red
25% Recessive Red
25% Non-recessive Red
50% Non-recessive Red Carrying Recessive Red
25% Recessive Red
25% Non-recessive Red

 Non-recessive Red Carrying Recessive Red

 Non-recessive Red

 75% Non-recessive Red

25% Non-recessive Red Carrying Recessive Red

75% Non-recessive Red
25% Non-recessive Red Carrying Recessive Red

 Recessive Red

 Recessive Red

 100% Recessive Red

 100% Recessive Red

 For white self just repeat substituting Recessive Red with White

 

 

 

 Almond

Non-almond

50% Almond
50% Non-almond
50% Almond
50% Non-almond

 Non-almond

Almond

100% Almond
100% Non-almond

 Almond

 Almond

 25% Homozygous Almond

75% Almond

25% Non-almond
75% Almond

 Almond is sex linked

 Almond carries a semi-lethal gene in the homozygous state in cock birds.  Avoid breeding an Almond to an AlmondThey generally do not hatch or live long after.  Suffer eye problems and other deformities to include a lethargic behavior