Greenwood Chinchillas

Which Beige Is My Chin?

 

Beige colouration has two types:  Hetero and Homo

 

Homo beige colouring is more pale milky cream - but can be darker

Hetero Beige is generally sandy coloured - but again can vary.

 

The real difference is in the genetics and the only way to be sure is to breed from the animal.

 

     A Hetero beige has one beige and one standard gene - so will produce 50% standard and 50% hetero beige kits when paired to a standard.

 

     Homo Beige have two Beige genes (no standard) - so when paired to a standard will always produce hetero Beige babies (one standard and one beige gene)

 

Hetero Beige	Homo Beige (Pic courtesy of Blue Meadow Chinchillas)

 

Lets over simplify things and say every chin is made up of two genes - the combination of which make the colour (i'm ignoring recessives like violet combined with beige for this!)

 

·          A standard is made up of Standard gene 1 and standard gene 2

·          Hetero Beige is made up of Standard Gene and Beige Gene

·          Homo Beige is made up of Beige Gene 1 and Beige Gene 2

 

So any kit that is born has one gene from each parent - so the combinations are what produce the confusion.

 

If DAD is Homo Beige we have Dad Beige Gene 1 and Dad Beige Gene 2

If MUM is Hetero Beige we have Mum Standard Gene and Mum Beige Gene

 

The kits from any Homo beige will always have a beige gene so will always be beige - but if mum also has a beige gene could be homo beige.

 

So from this pair we have:

 

Dad Beige Gene 1 + Mum Gene Std = Hetero Beige Kit
Dad Beige Gene 2 + Mum Gene Std = Hetero Beige Kit
Dad Beige Gene 1 + Mum Gene Beige = Homo Beige Kit
Dad Beige Gene 2 + Mum Gene Beige = Homo Beige Kit

 

So we have 4 options as to what the kits will be - 2 out of 4 will be Hetero beige ( Std / Bg & Bg / Std) and 2 will be homo (bg / bg) - so 50% Hetero Beige and 50% homo beige

 

This is often shown by use of a Punnet Square

 

	Dad (Homo Beige)
		Bg	Bg
Mum (Hetero Beige)	Std	Std / Bg	Std / Bg
	Bg	Bg / Bg	Bg / Bg

 

 

If DAD is Hetero Beige we have Dad Standard Gene and Dad Beige Gene

If MUM is Hetero Beige we have Mum Standard Gene and Mum Beige Gene

 

The kits from any Homo beige will always have a beige gene so will always be beige - but if mum also has a beige gene could be homo beige.

 

So from this pair we have:

 

Dad Standard + Mum Gene Std = Standard Kit
Dad Beige Gene 2 + Mum Gene Std = Hetero Beige Kit
Dad Standard Gene + Mum Gene Beige = Hetero Beige Kit
Dad Beige Gene 2 + Mum Gene Beige = Homo Beige Kit

 

So we have 4 options as to what the kits will be - 2 out of 4 will be Hetero beige and 1 will be standard, and  1 will be homo beige - so 50% Hetero Beige and 25% each of standard and homo beige

 

This is often shown by use of a Punnet Square

 

	Dad (Homo Beige)
		Std	Bg
Mum (Hetero Beige)	Std	Std / Std	Std / Bg
	Bg	Bg / Std	Bg / Bg

 

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