KaDoKits Exotics presents the Genetics of Coat Length...
The Long & Short of It

Hair Length is one of the biggest challenges for Exotic breeders...the quest to get short hair on all of our kittens!

The Exotic is a short haired Persian.
Many Exotic breeders use Persians in their breeding programs.
There is no magic formula...it's whatever works for your individual program.

Remember...
...you have to build the house before you can paint it.
What is important is the overall quality of the cat you are using.
How does it compare to the breed standard?
How do the cats you are using compliment each other?
Just as, there's more to a Persian than a short nose, there's more to an Exotic than its coat length.

The Cat Package...
There's a total cat package in an Exotic and you have to breed towards the total Exotic standard (which, in CFA, reads identically to the Persian standard,except for coat length).  
Body, bone, head, expression, ears, color, etc....
Whether you use only shorthaired Exotics (ESH), or you mix the shorties with Persians and/or longhaired Exotics (ELH), is a personal choice.
What is important is the overall quality of the Exotics you are producing and that you understand your genetics.

Know how to read a pedigree.
In CFA, we have registration number prefixes that tell us if a long hair Persian is a "pure" Persian (only Persian lineage) or a long hair from Exotic lineage.
"Pure" Persians and long hair Exotics LOOK identical!
As far as the genetics of their
coat length, they will breed EXACTLY the same.

The gene for short hair length is dominant, L.
The gene for long hair length is recessive,
l.

A homozygous shorthair is noted LL.
This cat has two dominant genes.
This cat received a shorthair gene from mom and a
shorthair gene from dad.
This cat will only produce shorthair kittens because
it only has shorthair genes to give.

A
heterozygous shorthair is noted Ll.
This cat has a dominant gene and a recessive gene.
This cat received a shorthair gene from one parent
and a longhair gene from the other parent.
This cat can produce either shorthair kittens or
longhair kittens, depending on the genetic make-up
of the mate.

A
homozygous longhair is noted ll.
This cat has two recessive genes.
This cat received a longhair gene from mom and a
longhair gene from dad.
This cat will only pass on longhair genes to its
offspring.
-----------------------------------
GC, Hot Diggety!, red
PER
 |
CH, Hot Dang!, red ESH
|    |
|    Blue Belles N Roses, blue-cream ESH
|
GC, Cinderfella, black ESH
|    |
|    |    Burnt Offering, black
ELH
|    |    |
|    GC, Fire N Ashes, tortoiseshell ESH
|         |
|         GC, Flash Dance, tortoiseshell ESH
|
F, GC, Fluffy, black ESH
|
|         GC, RW, Sir Luv-Lee-Purrz, red
PER
|         |
|    GC, GP, Burnin' Luv, red
PER
|    |    |
|    |    CH, Flamin' Heart, red
PER
|    |
GC, Painted Lady, tortoiseshell ESH
|
|    GC, Blue Moon, blue
PER
|    |
CH, Midnight Kiss, black ESH
|
Total Eclipse, black ESH
---------------------------------
Copyright: Pedigrees2020© 1991-2005;//,
www.pedigrees2020.com
Let's look at our favorite cat
Fluffy!

Can we find out what Fluffy's hair length genetics are?

Let's start with her father's side of the pedigree,
Cinderfella, ESH.
Since he's out of 2 Exotics, we need to look at his parents.
His father, Hot Dang! is an ESH out of a Persian (
ll) and an ESH.
We don't know if Blue Belles N Roses is hmz or htz for shorthair, but it doesn't
matter, since she gave a short hair gene to her son.
Let's say she's htz (
Ll).













Now let's look at Cinderfella's mother, Fire N Ashes, an ESH.
Her father, Burnt Offering, is an ELH (
ll).
Her mother, Flash Dance, is an ESH, let's say she's hmz (
LL).














So now that we know Cinderfella's parents' hair length genetics,
lets see what Cinderfella could be.


















Fluffy's mother is easier.
Painted Lady is an ESH out of a Persian (
ll) and an ESH.
We automatically know
Painted Lady's hair length genes are Ll.  
The
l comes from her Persian father and the L comes from her Exotic mother.
Midnight Kiss is also
Ll since she is out of a Persian (ll) and an ESH.
(See Hot Dang!'s Punnet Square for the breakdown.)

So, Fluffy's hair length genetics could be....









~ or ~
 
l
l
L
Ll
Ll
l
ll
ll
Hot Dang! - ESH
Hot Diggety! - PER - (ll)
Blue
Belles
N
Roses
- ESH -
(Ll)
From this breeding there
is a 50% chance of
having htz ESHs and a
50% chance of having
hmz ELHs.
So we see that
Hot
Dang!
's hair length is Ll.
 
l
l
L
Ll
Ll
L
Ll
Ll
Fire N Ashes - ESH
Burnt Offering - ELH - (ll)
Flash
Dance
- ESH -
(LL)
From this breeding there
is a 100% chance of
having htz ESHs.
This is the beauty of
having a hmz ESH!!!!!
So we see that
Fire N
Ashes
' hair length is Ll.
Cinderfella - ESH
 
L
l
L
LL
Ll
l
Ll
ll
Hot Dang! - ESH - (Ll)
Fire N
Ashes
- ESH -
(Ll)
From this breeding there
is a 50% chance of
having htz ESHs (
Ll).
A 25% chance of having
hmz ESHs (
LL).  
And a 25% chance of
having hmz ELHs (
ll).
So, Cinderfella could be
hmz (LL) or htz (Ll) ESH.
There's no way to know
for sure without a DNA
test.
 
L
L
L
LL
LL
l
Ll
Ll
50% chance of hmz ESHs
50% chance of htz ESHs
 
L
l
L
LL
Ll
l
Ll
ll
25% chance of hmz ESHs
50% chance of htz ESHs
25% chance of hmz ELHs
black & white Persian on the left
black & white Exotic on the right
white Exotic Shorthair
black & white
Exotic Longhair (ELH)
silver tabby
Exotic SH

homozygous
for
shorthair (LL)

(Platero has
never produced
a long haired
kitten.)
silver tabby
Exotic Shorthiar

heterozygous for short hair (Ll)

(son of Platero, ESH (LL), and Gloria, Persian (ll))
Can you tell just from the
pictures below what the
heritage and genetic make-up is
of each cat?

This is why knowing your
genetics and how to read a
pedigree is so important when
you breed!!
Cinderfella - ESH - (LL)
Painted
Lady  ESH
(Ll)
Cinderfella - ESH - (Ll)
Painted
Lady
ESH
(Ll)
KaDoKits Exotics
flame lynx
point Exotic

He has never
(yet)
produced a
longhair kitten

might be
homozygous
for SH