colors and patterns/ an introduction to color … · the color and contrast vary depending on the...
TRANSCRIPT
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COLORS AND PATTERNS/
AN INTRODUCTION TO COLOR GENETICS in the PEDIGREED CAT
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• Purpose of today’s presentation
– Acquaint you with the basics of colors and
patterns and the associated genetics
– Enable you to identify the common
patterns/colors found in the pedigreed cat
– Point out opportunities for further learning
– Learn and have fun!!
INTRODUCTION
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• Basis of all discussions around the
descriptions of colors and patterns - the
final authority today and during judging.
• Two issues to acknowledge regarding
the descriptions of colors and patterns:
– Many contradictions
– Many incongruities
CFA BREED STANDARDS
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• Decoration
• Design
• Scheme
• Stencil
• _______
• _______
Template – a Model that can be
used over and over again.
WHAT IS A PATTERN?
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START WITH THE BASICS
• Our cats have descended from the African Wild Cat –Felis Silvestris Lybica.
• FSL is a Brown McTabby patterned cat.
• Mutations resulted in the variety of colors and patterns that we see in our cats today.
• Mutations result from:• Imperfect replication or joining of the components of
the DNA molecule• Chemical imbalance within the body• Mutagens – nicotine and thalidomide• Greatest of all mutagen is radiation• Solar radiation, cosmic rays and Earth’s background
radiation
• Not all Mutations support survival.
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Felis Silvestris Lybica
and the
Seven Ancient Mutations
• Long Hair
• Blotched/Classic
Tabby
• Solid Color/Non-Agouti
• Dominant/Epistatic
White
• White Spotting
• Sex-Linked Orange
or Red
• Dilution
START WITH THE BASICS
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• Solid Color
• Shaded
• Tabby
• Parti-color
• Bi-Color
• Albino Series
PATTERN GROUPINGS
WHAT IS A PATTERN?
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• Dependent on selective
breeding
• Exceptions:
– Burmese
– Tonkinese - all patterns
– Siamese/Pointed/Himalayan
Pattern
– Blue-eyed white Albino
Artwork adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
EYE COLOR
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EYE COLOR
Heterochromia of the
eye (heterochromia
iridis or heterochromia
iridum)
• Complete
heterochromia - one
iris is a different color
from the other.
• The “odd-eyed” cat
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EYE COLOR
• Partial heterochromia or
sectoral heterochromia,
part of one iris is a different
color from its remainder.
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Black and White Persian Cats - The Book of the Cat by Frances Simpson; 1903
SOLID COLOR
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• There are two reasons why we start with the solid color pattern:
• First, we need to understand that “solid color” is a pattern;
• Second, it allows us to learn about the basic colors that occur in the
pedigreed cat.
• There are several breeds where the solid color pattern is the distinguishing pattern.
These are:
• Bombay
• Chartreux
• Havana Brown
• Korat
• Russian Blue
• A solid colored, or self colored cat, is one whose coat is one color. There are no tabby
markings, no white lockets and no startling change between the tip of the hair and
where it exits the skin.
• Variances in solid colors most often happen in kittens - smoky undercoats; tabby
markings; white kittens often will have a smudge of color and/or pattern on their top
heads.
SOLID COLOR
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White
Black
Chocolate
Cinnamon
Red
Blue
Lavender/Lilac
Fawn
Cream
SOLID COLORS
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Colors specific to the NFC
Amber
Light Amber - dilute of Amber
SOLID COLOR
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SOLID COLOR
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Smoke Persian - From Perfect Cats by Peter Warner; 1991
SHADED AND SMOKE
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Chinchilla Cat - The Book of the Cat by Frances Simpson; 1903
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What’s the difference?!
18Chinchilla SmokeShaded
SHADED AND SMOKE
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• Basically, the difference between the chinchilla, shaded and smoke patterns is the degree to which
pigment is deposited on the ends of the hair. This is determined by the degree of influence of the
Inhibitor gene.
• Chinchilla/Shell - last 1/8 of the hair – the heavy expression of the inhibitor gene
• Shaded - last 1/4 of the hair – the moderate expression of the inhibitor gene
• Smoke - last 1/2 of the hair – the light expression of the inhibitor gene
SHADED AND SMOKE
What’s the difference?!
Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
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Chinchilla/Shell
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Shaded Colors - Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
SHADED AND SMOKE
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Shaded
Shaded Colors - Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
SHADED AND SMOKE
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Smoke
Shaded Colors - Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
SHADED AND SMOKE
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Goldens
Shaded Colors - Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
SHADED AND SMOKE
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SHADED AND SMOKE
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25Brown Tabby and Orange Tabby SH Cats- The Book of the Cat by Frances Simpson; 1903
TABBY PATTERNS
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• Tabby patterns are actually the combination of two patterns - one superimposed over the other
• Agouti camouflage is the background color -- the “ground color” - each hair has alternating
bands of color - each hair is ticked with multiple bands of color
• Superimposed over the agouti camouflage are the solid color markings
• There are many variations to those solid color markings
• There are five tabby patterns recognized throughout the pedigreed breeds but before we get
into the various tabby patterns, let’s examine the common features of the tabby patterns.
• Ground color - the background color (agouti) of the tabby pattern. The color and
contrast vary depending on the color. The expectation is that the ground color offers
significant contrast to the tabby markings.
• Tabby markings - the swirls, stripes, pencilings and/or spots of the particular pattern.
These markings are expected to be one color and very dense.
• Spine line - the stripe(s) running down the back or the spine of the cat.
• Mascara markings/lines - facial tabby markings, particularly around the eyes but
including cheek markings or swirls.
• Bracelets - the tabby markings that encircle the legs.
• Necklaces - the tabby markings at the throat.
• Tail Rings - the markings that encircle the tail.
• Buttons on the belly
• The Tabby “M” - the characteristic marking on the forehead of every tabby patterned
cat.
TABBY PATTERNS
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Mackerel Tabby
TABBY PATTERNS
• Mackerel Tabby Pattern - the “wild-type” tabby
pattern. “The markings are dense, clearly defined,
and all narrow pencilings. The legs are evenly barred
with narrow bracelets coming up to meet the body
markings. The tail is barred with tail rings. The
necklaces on neck and chest are distinct, like so
many chains. The head is barred with an “M” on the
forehead. Unbroken lines are running back from the
eyes. Lines are running down the head to meet the
shoulders. The spine lines run together to form a
narrow saddle. Narrow pencilings run around body.”
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TABBY PATTERNS
Classic Tabby• The Classic - Blotched - Tabby pattern - The term
blotched is derived from the irregular spirals and whirls of
tabby markings. “The markings are dense, clearly defined,
and broad. The legs evenly barred with bracelets coming up
to meet the body markings. The tail is evenly ringed. There
are several unbroken necklaces on the neck and upper
chest, the more the better. The frown marks on forehead
form an intricate letter “M.” An unbroken line runs back from
outer corner of eye. There are swirls on the cheeks. Vertical
lines over the back of the head and extend to the shoulder
markings which are in the shape of a butterfly with both
upper and lower wings distinctly outlined and marked with
dots inside the outline. The back markings consist of a
vertical line that runs down the spine from the butterfly to
the tail with a vertical stripe paralleling it on each side. The
three stripes are well separated by stripes of the ground
color. There is a large solid blotch on each side of the body
that is to be encircled by one or more unbroken rings. The
side markings should be the same on both sides. There is a
double vertical row of buttons on chest and stomach.”
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TABBY PATTERNS
Spotted Tabby• The Spotted Tabby pattern - The pattern is not
uniform in this variation. “The markings on the body
are to be spotted. They may vary in size and shape
with a preference given to round, evenly
distributed spots. The spots should not run
together in a broken mackerel pattern. A dorsal
stripe runs the length of the body to the tip of the
tail. The stripe is ideally composed of spots. The
markings on the face and forehead shall be typically
tabby markings. The underside of the body is to
have "vest buttons." The legs and tail are barred."
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TABBY PATTERNS
Ticked Tabby
• The Ticked Tabby pattern - In breeds other than
the Abyssinian, Somali and Singapura, the pattern
description is described as: “The body hairs are to
be ticked with various shades of marking color and
ground color. The body, when viewed from the top
is to be free from noticeable spots, stripes, or
blotches, except for darker dorsal shading. The
lighter underside may show tabby markings. The
face, legs, and tail must show distinct tabby striping.
The cat must have at least one distinct necklace.”
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Patched Tabby
TABBY PATTERNS
• Patched Tabby pattern - The sex-linked red gene
can express itself in tabbies as the addition of red or
cream to any tabby pattern occurring in a female
cat. (This variation is covered here because most
breeds examine their patched tabby examples with
the tabby group.) The patching can be just that,
patching - or it can follow the pattern, running
around and through the tabby markings. Each
individual cat will be different. Red or cream
overlays the primary color
• When the red or cream patching actually follows the
tabby pattern and outlines it, it is OK.
• Multiple colors on the face can draw your attention
away from or towards certain facial features and this
can fool you into thinking that you are looking at an
asymmetrical face when in fact the face is straight. It
works the other way too.
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Agouti Cats . . . Not bi-colors
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TABBY PATTERNS
• Tabbies with white on their chins, lips and around the nostrils are Agouti tabby cats – true tabbies.
They are not bi-colors and this white is not locketing or spotting. In CFA, cats shown as tabbies who
do not have this white are likely being shown as tabbies because that is what they LOOK like – they
make a better tabby than a solid color. When you travel outside CFA as a judge, it is not unusual to
find cats entered as reds, creams or blues, with heavy tabby markings but without white in these
areas. That is because in other associations, these cats are shown for what they are genetically – a
solid color rather than what they look like phenotypically. Remember, underneath it all. Every cat is
a tabby.
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33Tabby Colors - Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
TABBY PATTERNS
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34Tabby Colors - Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
TABBY PATTERNS
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35Tabby Colors - Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
TABBY PATTERNS
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36Tabby Colors - Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
TABBY PATTERNS
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Abyssinian Colors
Singapura
TABBY PATTERNS
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Amber and Light Amber Tabby
TABBY PATTERNS
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TABBY PATTERNS
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TABBY PATTERNS
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41Tortoiseshell and Tortoiseshell and White Persians - The Book of the Cat by Frances Simpson; 1903
PARTI COLORS
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• Colors that only occur in the female cat. In order to be a tortoiseshell,
primary or dilute, or a patched tabby, a cat requires two (2) red genes.
• Red genes “reside” ONLY on the X chromosome.
• If a cat has two red genes, she has two X chromosomes and is a
female.
• When these patterns occur in males, they are generally sterile.
• There are exceptions but these males don’t sire as parti-colors. They
usually sire as reds.
PARTI COLORS
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Tortoiseshell
Pattern
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PARTI COLORS
• The archetypal tortoiseshell is a black female cat
with random patches of red. If you look carefully at
the red areas, you will see evidence of the red tabby
pattern. This has given rise to the popular belief that
the tortoiseshell colored coat is comprised of three
colors - black, red and cream. In fact, what looks like
cream is actually the ground color of the red tabby
pattern.
• Many of our standards have been changed to reflect
the more correct definition of the tortoiseshell cat - “a
black female cat with patches of red" or, "softly
intermingled areas of red.”
• Study each standard carefully. The language
changes from breed to breed!
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12
3
4
PARTI COLORS
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PARTI COLORS
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PARTI COLORS
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Bi-Color and Calico Cats - By George Louis LeClerc Buffon
from Oeuvres Completes de Buffon, Volume III, 1833
BI-COLORS AND CATS WITH WHITE
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• White spotting can occur with any pattern or color here-
to-fore mentioned.
• There can be as little white as a white toe or belly spot
or as much as a nearly all white cat.
• White can also combine with the Pointed pattern (which
we will be learning about in a moment or two.
BI-COLORS AND CATS WITH WHITE
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BI-COLORS AND CATS WITH WHITE
• Descriptions of the bi-color pattern in the pedigreed cat vary from breed to breed. In some, the definition is specific:
“as a preferred minimum, the cat should have white feet, legs, undersides, chest, and muzzle. Less white than this
should be penalized appropriately.” Some standards state that an “inverted “V” blaze on face is desirable.” In others,
the bi-color pattern is described only as, “solid color and white, tabby and white, tortoiseshell and white, etc.”
• When the bi-colored cat is almost completely white with the color and/or pattern confined to the head and tail, the
pattern is termed “bi-color van” (see numbers 6, 7, 8 and 9 on the illustration above). There is only one breed in
which the van pattern is a significant defining characteristic: the Turkish Van.
• The gene associated with random white spotting is thought to be a different gene than the one that results in bi-color
patterns.
• Looking at the range of patterns above, please note examples 2 and 3 are views of the cat’s stomach -- the others are
from the perspective of the top or back of the cat
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Calico
BI-COLORS AND CATS WITH WHITE
• Calico - “a tri-color cat of black, red and white. The red and the black
should appear as clear, unbrindled patches. As a preferred minimum,
the cat should have white feet, legs, undersides, chest and muzzle.
Less white than this minimum should be penalized proportionately.”
Another way of looking at the calico pattern is that the cat is a female
cat with large areas of black and red overlaid with white.
• Calico pattern is related to the sex linked red gene, is generally
included in the bi-color group in most breeds. In the Japanese
Bobtail, the calico pattern is termed Mi-Ke—the equivalent to calico
(or tri-color) in Japanese.
• Be aware that you are looking for solid areas of red and black or blue
and cream or any number of colors with red or cream. BUT,
sometimes, what you may be actually looking at is a Tortoiseshell and
white.
• Genetically, calicos and tortie and whites are identical. It is merely a
matter of the distribution of all the color in the development of the
embryo of the kitten.
• Rule of thumb - calicos have large solid areas of color and torties
have patches. Another clue – low white is generally associated with
torti and white while high white is more associated with calico.
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12
3
4
BI-COLORS AND CATS WITH WHITE
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BI-COLORS AND CATS WITH WHITE
• Solid Color and White - “black and white, blue and white, red and white, cream and
white, chocolate and white, or lilac and white. As a preferred minimum, the cat should
have white feet, legs, undersides, chest, and muzzle. Less white than this minimum
should be penalized proportionately.”
• While Number 1 above is a black and white bi-color, keep in mind that the black portion
could be any color.
• Similarly, Number 3 above is a brown tabby and white but there could be any tabby color
or pattern present. Even patched tabby!
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BI-COLORS AND CATS WITH WHITE
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BI-COLORS AND CATS WITH WHITE
From The Messy Beastwww.messybeast.com
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55From the Tamra Maew as shown in The Legend of the Siamese Cats by Martin R. Clutterbuck, 1998
PATTERNS OF THE ALBINO SERIES
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• Patterns of the Albino Series encompass more than the Siamese pattern.
• Albino genes influence if, where and to what degree, color and pattern will be deposited in the
animal’s skin and hair.
PATTERNS OF THE ALBINO SERIES
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THE ALBINISM GENE
• There are 5 alleles for this gene.
• “C” results in full color, dominant gene
• “cb” Burmese gene
• “cs” Siamese gene
• “ca” blue-eyed albino
• “c” true albino
• Dominance: C > cb = cs > ca > c
• cbcs mink pattern of the Tonkinese
• Temperature sensitive genes
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PATTERNS OF THE ALBINO SERIES
Sable/Brown/
Natural
Champagne/
Chocolate
Red
Blue
Platinum/Lilac
Cream
Burmese/Sepia Pattern• This diagram illustrates colors commonly associated with the Burmese gene.
• When the Burmese gene is present, the pattern on the cat appears to be solid
when in fact it is really pointed. The Burmese gene allows for more color to be
deposited across the body of the cat.
• The Burmese cat is the primary breed where these colors are a defining
characteristic.
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Mink Pattern
Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
PATTERNS OF THE ALBINO SERIES
• Both the Burmese “cb” and Siamese “cs” genes
are in the albino series, both are recessive and
neither are dominant over the other. They are
said to be “codominant.” This means that the
effects of both alleles will be visible in those cats
who inherit the combination of the two. When
this happens, we call the pattern “mink.” We
refer to the eye color that results as “aqua.”
• As you examine a mink patterned Tonkinese,
note that even though it is a pointed pattern cat,
the points merge into the body color which is
darker than a completely point restricted cat.
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• Colorpoint
• Pointed
• Himalayan
• Siamese
PATTERNS OF THE ALBINO SERIES
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PATTERNS OF THE ALBINO SERIES
• “Body color is even, with subtle shading when allowed.
Allowance should be made for darker color in older cats as
pointed pattern cats generally darken with age. But there must
be a definite contrast between the body color and points. The
points - face mask, ears, legs, feet, and tail - are dense and
clearly defined and are all of the same shade. The face mask
covers the entire face including the whisker pads and is
connected to the ears by tracings. The face mask should not
extend over the top of the head. There should be no ticking or
white hairs in the points” except as allowed (e.g., ticked tabby
point and white bi-color). This is the basic pattern description
no matter what the point pattern or color is.
• The gene that causes this pattern is the Siamese gene. The
Siamese gene directs color to the points - the face, ears, feet
and the tail. These are the coolest parts of the body; the
areas that get the least circulation.
• The Siamese gene also alters the amount of pigment in the iris
of the eye.
• As pointed cats age, blood flow to the skin on the trunk of the
body diminishes and color is deposited across the body.
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Solid
1 2 3 4 5 6
PATTERNS OF THE ALBINO SERIES
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Pointed Pattern Colors - Adapted from The Book of the Cat by Michael Wright and Sally Walters, 1980
Lynx
Patched Lynx
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PATTERNS OF THE ALBINO SERIES
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Partis
1 2 3 4
65
PATTERNS OF THE ALBINO SERIES
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Birman
Pattern
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PATTERNS OF THE ALBINO SERIES
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1 2 3 4 5 6
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PATTERNS OF THE ALBINO SERIES
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The Pointed Bi-Color Pattern
PATTERNS OF THE ALBINO SERIES
• “Points: ears, mask, feet and tail to be
darker, with well-defined color. Nose leather
and paw pads: fully pigmented and matching
point color. Body: definite contrast between
body and points, chest, bib and chin areas
may be somewhat lighter in color.
Disqualify: presence of any locket or white
spot anywhere on cat’s body.”
• The pointed bi-color pattern in all breed, as
well as the other Ragdoll patterns will be
covered more extensively in the discussion of
each breed.
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PATTERNS OF THE ALBINO SERIES
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PATTERNS OF THE ALBINO SERIES
Used with permission of Chamsey’s Cattery.
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PATTERNS OF THE ALBINO SERIES
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PATTERNS OF THE ALBINO SERIES
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OH MY! WHAT NEXT?!
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Bring your answer sheets to the first day of class!
74
PRINT SLIDES 71 - 86 AND COMPLETE THE POST TEST!
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Identify the Seven Ancient Mutations:
1.
2.
3.
4.
5.
6.
7.
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1.
2.
3.
4.
5.
6.
What are the six pattern groupings identified?
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What are the basic colors of the domesticated cat?
Place an asterisk (*) by those color which are dilute.
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Identify the pattern seen in these cats.
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Identify the patterns seen in these cats.
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80
Identify the patterns seen below.
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81
Given the patterns on the previous slide,
what are the nine (9) common elements
found in all of them?
1.
2.
3.
4.
5.
6.
7.
8.
9.
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82
Identify the pattern group seen in these cats.
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83
Identify the pattern group seen in these cats.
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84
Identify the pattern seen below.
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85
Identify the pattern seen below using all four names.
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86
Identify the pattern seen in these cats.