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Coat Colour Inheritance Charts of the Collie

Taken from the book THE COLLIE - A VETERINARY REFERENCE FOR THE PROFESSIONAL BREEDER -, with permission granted by the author, Dr. Sharon Vanderlip, USA, Collie Breeder of Rainshade Collies

Dr. Sharon Vanderlip has a new Collie book coming out, anticipated release date end of 2004 and to check www.vetsfiles.com for updates.

Parents		Progeny

Sable a^ya^ymm	Sable a^ya^ymm	Sable a^ya^ymm 100%

Sable a^ya^ymm	Sable a^ya^tmm	Sable a^ya^ymm 50%	Sable a^ya^tmm 50%

Sable a^ya^tmm	Sable a^ya^tmm	Sable a^ya^tmm 50%	Sable a^ya^ymm 25%	Tricolor a^ta^tmm 25%

Sable a^ya^ymm	Tricolor a^ta^tmm	Sable a^ya^tmm 100%

Sable a^ya^tmm	Tricolor a^ta^tmm	Sable a^ya^tmm 50%	Tricolor a^ta^tmm 50%

Sable a^ya^ymm	Blue-merle a^ta^tMm	Sable-merle a^ya^tMm 50%	Sable a^ya^tmm 50%

Sable a^ya^tmm	Blue-merle a^ta^tMm	Sable a^ya^tmm 25%	Sable-merle a^ya^tMm 25%	Blue-merle a^ta^tMm 25%	Tricolor a^ta^tmm 25%

Sable a^ya^ymm	Sable-merle a^ya^yMm	Sable a^ya^ymm 50%	Sable-merle a^ya^yMm 50%

Sable a^ya^ymm	Sable-merle a^ya^tMm	Sable-merle a^ya^yMm 25%	Sable-merle a^ya^tMm 25%	Sable a^ya^ymm 25%	Sable a^ya^tmm 25%

Sable a^ya^tmm	Sable-merle a^ya^yMm	Sable-merle a^ya^yMm 25%	Sable-merle a^ya^tMm 25%	Sable a^ya^tmm 25%	Sable a^ya^ymm 25%
Sable a^ya^tmm	Sable-merle a^ya^tMm
		Sable-merle a^ya^yMm 12,5%	Sable-merle a^ya^tMm 25%	Tricolor a^ta^tmm 12,5%

		Sable a^ya^ymm 12,5%	Sable a^ya^tmm 25%	Blue-merle a^ta^tMm 12,5%

Tricolor a^ta^tmm	Tricolor a^ta^tmm	Tricolor a^ta^tmm 100%

Tricolor a^ta^tmm	Blue-merle a^ta^tMm	Blue-merle a^ta^tMm 50%	Tricolor a^ta^tmm 50%

Tricolor a^ta^tmm	Sable-merle a^ya^yMm	Sable-merle a^ya^tMm 50%	Sable a^ya^tmm 50%

Tricolor a^ta^tmm	Sable-merle a^ya^tMm	Sable-merle a^ya^tMm 25%	Sable a^ya^tmm 25%	Tricolor a^ta^tmm 25%	Blue-merle a^ta^tMm 25%

Blue-merle a^ta^tMm	Blue-merle a^ta^tMm	White-merle a^ta^tMM 25%	Tricolor a^ta^tmm 25%	Blue-merle a^ta^tMm 50%

Sable-merle a^ya^yMm	Sable-merle a^ya^yMm	White-merle a^ya^yMM 25%	Sable-merle a^ya^yMm 50%	Sable a^ya^ymm 25%
Sable-merle a^ya^yMm	Sable-merle a^ya^tMm
		White-merle a^ya^yMM 12,5%	White-merle a^ya^tMM 12,5%	Sable a^ya^ymm 12,5%

		Sable-merle a^ya^yMm 25%	Sable-merle a^ya^tMm 25%	Sable a^ya^tmm 12,5%
Sable-merle a^ya^tMm	Sable-merle a^ya^tMm
		White-merle a^ya^tMM 12,5%	White-merle a^ta^tMM 6,25%	White-merle a^ya^yMM 6,25%

		Sable-merle a^ya^tMm 25%	Sable-merle a^ya^yMm 12,5%	Blue-merle a^ta^tMm 12.5%

		Tricolor a^ta^tmm 6,25%	Sable a^ya^ymm 6,25%	Sable a^ya^tmm 12,5%
Sable-merle a^ya^yMm	Blue-merle a^ta^tMm
Sable-merle a^ya^yMm	Blue-merle a^ta^tMm	White-merle a^ya^tMM 25%	Sable-merle a^ya^tMm 50%	Sable a^ya^tmm 25%
White-merle a^ta^tMM	Tricolor a^ta^tmm
White-merle a^ta^tMM	Tricolor a^ta^tmm	Blue-merle a^ta^tMm 100%
Sable-merle a^ya^tMm	Blue-merle a^ta^tMm
		White-merle a^ya^tMM 12.5%	White-merle a^ta^tMM 12,5%	Tricolor a^ta^tmm 12,5%

		Sable-merle a^ya^tMm 25%	Sable a^ya^tmm 12,5%	Blue-merle a^ta^tMm 25%

Merle x merle breeding produces the so-called double-merles or white-merles, they may be defective in hearing and/or vision.

Sable-merles or darksable-merles can sometimes be very difficult to identify, usually the merling can be seen on puppies only. A knowledge of the parents genytypes is required. To avoid a sable-merle x sable-merle mating, thie breeding of sable-merles is not allowed as well.

White Collies are 90-99 percent all white and are homozygous for the white factor s^w. The head of the White Collie is coloured according to its genotype (sable, tricolour, blue-merle). As the collie is a British breed, England is responsible for Collie standard. In the actual standard, the colour white is not a recognised Collie colour and may lead to a disqualification on shows and selections. In the USA the White Collie is permitted to be exhibited, the colour white is an additional colour in the US standard.

The White Collie is a healthy dog as sable and tricolours, and is on its way to win more and more popularity in Europe. The White Collie has nothing to do with a double-merle which may be defective.

Parents		Progeny

White s^ws^w	White s^ws^w	White 100% s^ws^w

White-factored sⁱs^w	White-factored sⁱs^w	White 25% s^ws^w	White-factored 50% sⁱs^w	Not white-factored 25% sⁱsⁱ

White-factored sⁱs^w	White s^ws^w	White 50% s^ws^w	White-factored 50% sⁱs^w

White s^ws^w	Not white-factored sⁱsⁱ	White-factored 100% sⁱs^w

White-factored 100% sⁱs^w	Not white-factored sⁱsⁱ	White-factored 50% sⁱs^w	Not white-factored 50% sⁱsⁱ

Not white-factored sⁱsⁱ	Not white-factored sⁱsⁱ	Not white-factored 100% sⁱsⁱ

Coat Colour Inheritance Charts of the Collie

Parents

Progeny

Parents

Progeny