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Albino c

The lowest rung on the c-series ladder of dominance is occupied by the albino c allele.  Whenever a Netherland Dwarf, regardless of which other colour genes it posesses in the a-, b- or d- series, inherits two recessive albino cc alleles - all colour development is entirely restricted.  Not only does every fur shaft on the rabbit's body lack pigment of either black or yellow, but the irises of the eyes are also uncoloured.  The iris only appears coloured from the pinkish cast of the underlying blood vessels.  Thus, the albino is our Red-Eyed White variety.  Sometimes it can come as a surprise when a Red-Eyed White offspring they producedfrom coloured parents.  But it is simple to explain this when we give an example of breeding an albino rabbit from coloured parents.

    X         

Sire (Marten Sable)       Dam (black)  

offspring (red-eyed white)

Genetically, Red-Eyed Whites may be agouti-patterned, tan-patterned or self-patterned depending upon their genetic inheritance from the pattern setting a-series.  They may be either basic black or basic brown from the b-series.  They may have inherited the genotype to be either dilute blue or dilute lilac from the d-series.  But regardless of what genotype the Red-Eyed White has inherited, its phenotype is invariable Red-Eyed White due to the effect the pair of albino cc alleles have in restricting any colour from appearing.  It is only when we breed the homozygous albino cc Red-Eyed White to a coloured Dwarf, that we see evidence (by the virtue of the colours of the offspring produced) of which other colour genes the REW is carrying.  Incidentally, it is not genetically possible for a pair of REW parents to ever produce a colour-ed bunny.  This is quite obvious when we breed a pair of REWs.                                                       

    X   

Sire (red-eyed white)         Dam (red-eyed white)

offspring (red-eyed white)

 

As you can see from the above illustration, the REW parents can only transmit one or other of their two albino c alleles to any offspring they produce, for they have no other c-allele to transmit.  Any Dwarf inheriting a pair of albino cc gene alleles will experience a total restriction of colour pigment.  

The white rabbit is not a blank, colour-wise, contributing nothing towards its offpring's colour.  Try thinking of it, instead, as a camouflaged rabbit.  If a white sheet is covering an armchairs and then ask you to tell me what colour the chair is - you must either say 'white' or refuse to guess because you cannot see the chair beneath.  So it is with Red-Eyed Whites and Blue-Eyed Whites.  They may really be Agouti, Siamese Sable or any  of the other colours underneath that white coat. 

There is no way of telling which colour genes they are carrying by merely observing them.  Consequently, we must test-breed them and observe the colours of their offspring to discover this information.  The colour genes which are responsible for restricting all colour development from occurring in the Red-Eyed White and Blue-Eyed White may be any of the three colour patterns.  However, since we classify the Netherland Dwarf varieties by phenotype (by what we see) instead of by genotype (which we cannot always see), the whites are quite sensibly assigned to the Self Group.  

Full Colour C    Dark Chinchilla cchd    Light Chinchilla cchl    Himalayan ch

back to colour distribution in  the fur shaft

the basic patterns

the basic colours

extension of colour in the fur shaft

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