breeding cattery - british shorthair cats
Blood Group Result Codes:
N/N [A] = Cat is Type A or Type "AB"
N/b [A(b)] = Cat is a carrier of B factor; serotype
could be Type A or Type "AB"
b/b [bb] = Cat is Type B
The genetic test for the cat blood group identifies
the recessive b allele which is associated with the
B serotype. Cats with two copies of the b allele
have the Type B blood group. Cats with one copy of
the b allele can also be distinguished. These cats
can have blood group A or the rare blood group "AB".
Because the genetic test cannot distinguish between
a Type A versus a Type "AB" cat, the non-b allele is
reported as "N". The cat could have a Type A or Type
AB serotype.
Coat Color Result Codes:
Agouti (banded hair or solid):
A/A = All offspring will have agouti banded hair.
A/a = Offspring can be agouti or non-agouti
depending on the genetics of the mating.
a/a = Non-agouti. If bred to a non-agouti, only non-agouti
offspring will be produced.
Brown (Chocolate and Cinnamon):
The Brown (tyrosinase-related protein-1, TYRP1) gene
affects the amount of black (eumelanin) pigment
produced. Mutations responsible for brown and
cinnamon colors in the cat have been identified in
this gene. The wild-type B allele produces normal,
black coloration. The b allele produces the brown (chocolate)
phenotype and the b1 allele produces a light brown
or cinnamon phenotype. These form an "allelic series"
with B dominant to b, and b dominant to b1.
B/B = Full color, cat does not carry brown or
cinnamon alleles.
B/b = Full color, carrier of brown.
B/b1 = Full color, carrier of cinnamon.
b/b = Brown.
b/b1 = Brown, carrier of cinnamon.
b1/b1 = Cinnamon.
Colorpoint Restriction:
C/C = Full color, cat does not carry Burmese (sepia) or Siamese alleles.
C/c = Full color, cat carry Burmese (sepia) or Siamese alleles.
Dilute:
D/D = Full color. Cat does not have the dilute allele.
D/d = One copy of dilute allele. Cat is a carrier of dilute.
d/d = Two copies of dilute allele. Coat color is diluted.
The dilute gene (Melanophilin or MLPH) causes
clumping and uneven distribution of pigment granules
in the hair shaft, producing dilution of all coat
colors. Dilute is an autosomal recessive trait which
means that two copies of the dilute allele are
needed to produce the phenotype. Black pigment is
diluted to gray (blue is the term used by cat
breeders), and red is diluted to cream. The wild
type allele is non-dilute. Some cat breeds are fixed
for the wild type, such as Egyptian Mau and
Singapura, while others are fixed for dilute such as
Chartreux, Korat and Russian Blue. Most other breeds
have both wild type and dilute alleles.
PKD Result Codes:
N/P [positive] = Affected 1 copy of the PKD1 gene,
cat has or will develop PKD. Severity of symptoms
cannot be predicted.
N/N [negative] = Normal Does not possess the disease-causing
PKD1 gene.
The disease is inherited as an autosomal dominant
trait, which means that a heterozygote (N/P) bred to
a normal (N/N) will result in approximately half of
the offspring being affected and half being normal.
There are no observed homozygous affected (P/P),
which suggests that the mutation is embryonic lethal.
The test indicates the presence or absence of the
stop mutation in the feline PKD1 gene caused by a
cytosine to adenine transversion. This mutation
causes feline polycystic kidney disease (PKD), which
is characterized by renal, hepatic and pancreatic
cysts. This test has only been validated for
Persians, Exotics, Himalayans, British Shorthairs
and Persian first generation out-crosses.
Longhair Genetic codes:
N/N [LL] = Cat has short hair. None of the 4 long
hair mutations detected. Cat cannot produce long-haired
kittens.
N/M1, N/M2, N/M3 or N/M4 [LI] = Cat has short hair
and carries one copy of a long hair mutation. Cat
can produce short and long-haired kittens depending
on genotype of the mate.
M1/M1, M2/M2, M3/M3 or M4/M4 [II] = Cat has long
hair and will produce only long-haired kittens when
bred to a long-haired mate.
M1/M2, M1/M3, M1/M4, M2/M3, M2/M4 or M3/M4 [II] =
Cat has long hair and carries two different long
hair mutations (compound heterozygote). Cat will
produce only longhaired kittens when bred to other
long-haired cats.
Copyright : Royal Sapphire,CZ / design Nikola Arcanidu / update Royal Sapphire,CZ