Siamese Rat Genetics by Debbi J. Needham
Siamese Rat Genetics by Debbi J. Needham
2010 Repost  - 1st posted ~ 2003
Copyright D. Needham: 2000 - 2010. Please safeguard intellectual property by citing author and source. Enjoy the site!
KHR Lightening, Black Self (left)
Her Father: OFR Sam, Siamese
Her Mother: KHR J.P. Dumbo Blue
Grandparent: KHR Whsiper
Grandfather: SPR Titan
as far as genetics, a Siamese rat is a rat that is completely one solid color (a self rat). It is also a rat with a pair of color genes - they can be
any color, and it also has 'shading' genes that render its color to a "shade" or Siamese. The genes that make the color shade are recessive.
The Siamese rat appears beige with a dark shading rising from the rump to the back. Points of this darker shading are also seen on the ears,
nose, tail and feet and tail base. The genes that turn its color to shading are ch, ch.
A Himalayan rat has inherited one Siamese gene, ch, and one albino gene, c. This rat appears white (like the albino), but dark shading is
seen on the rump, tail, ears, nose and feet. The points of Siamese/Himalayan rats are the actual genetic color of the rat. So, a blue point
Siamese rat is also a solid blue rat genetically and can be bred to blues to get more. There are mink, blue, black, chocolate and many other
colors that show up as "points". At OFR, many self colored rats were bred into the Siamese lines to create rats with colored points.
OFR Snowflake, Himalayan
Velveteen, carried dumbo.
First
place Himalayan
, RatsPacNW 9/02.
OFR Sam
WWR Meditteranean, Son of
OFA Polo and WWR Latte da
OFR Sparky, BOS, BOV & BOS Kitten
RatsPacNW 9/01 and 3/02.
Son of OFR Snowflake and BdB Neptune.
OFR Gidgit, Himalayan, carrier of
dumbo & Blue. Daughter of OFR
Favorite and OFR Princess Blue
OFR Princess Blue
OFR Favorite, 2nd place
Himalayan
RatsPacNW 9/02
Son of OFR Cleopatra and
OFR Doubletake
OFR Cleopatra, 2nd place
velveteen, Ratspac NW
9/01
OFR Black Jack, brother of
Favorite
BOS Reserve, BOV
RatsPacNW 3/01. First place  
standard. son of OFR Cleopatra
and OFR Doubletake
BdB Neptune
OFR Sasha, seal point himalayan,
dumbo and blue carrier. Daughter of
WWR Medi and OFR Gidgit
OFR Doubletake
OFR O' Connel, Himalayan
Velveteen,
2nd place
Velveteen Himalayan
His Father: OFR Arthur,
Himalayan Velveteen
His Mother: OFR Mia, Siamese
OFR Mia
OFR Arthur
KHR Lightening X OFR Solace
Proud Parents of BOS Reserve Son &  BOV Daughter RatsPacNW
A blue standard buck and his sister, a Himalayan doe, each won Best of Variety at
separate RatsPacNW Rat Shows! His son, Daquiri Ice went on to win Best of
Show Reserve for his owner Jennifer Oster!
OFR Sparky's Legacy!
Sparky won Best of Show as a Kitten
and as an adult.

HE SIRED OFFSPRING:

HTR/OFR Gem
-Best in Show, BOV Himalayan
OFR Princeton
1st Place Dumbo Velveteen Blue
OFR Solace
2nd Place Himalayan

HE WAS GRANDPA TO:

OFR Cameron
BOV Himalayan
OFR Daquiri Ice
Best in Show Reserve,
BOV Standard Blue
OFRSolace, 2nd place Blue Point
Himalayan
RatsPacNW 3/02
Son of OFR Sasha and OFR Sparky.
RATS THAT WERE BRED INTO OUR SIAMESE LINES
OFR Sparky, Best of Show
His Parents: