Raabbit colour genetics , coat colour

2. Rabbit Colour Genetics

3. Rabbit Color Genetics

4. Coat Color
• Coat color in rabbits is controlled by at
least 5 known genes. 2 more are
suspected.
• (Aa-B-Cch-Dd-E)
• Our discussion will focus on what is
called the A locus.

5. A Locus
• The A locus determines whether the rabbit
will be solid colored or wild (Agouti)
colored.
AA – Homozygous Dominant - Wild
Aa – Heterozygous – Wild
aa – Homozygous Recessive - Solid

6. Father
Father – Heterozygote
Aa - Agouti

7. Mother
Mother – Homozygous Recessive
aa - Solid (Black)

8. Punnet Square
Mother
Father
A a
a Aa aa
a Aa aa

9. Expected Colors & Percentages
Mother
Father
A a
a Aa aa
a Aa aa
2/4 - Aa Heterozygous (50%) Wild color
2/4 – aa Homozygous Recessive (50%) Solid

10. Resulting Offspring
• 3 Wild - 2 Solid (60%/40%)

11. Father
Chestnut (Aa-B-Ccch-Dd-E)
Mother
Blue (aa-B-Ccch-dd-E
Opal
(Aa-B-C-dd-E)
Chinchilla
(Aa-B-cchcch-Dd-E)
Blue (?)
(aa-B-C-dd-E)
Squirrel (?)
(Aa-B-cchcch-dd-E)
Blue
(aa-B-C-dd-E)
Black
(aa-B-C-D-E)
Blue
(aa-B-C-dd-E)