trait: an inheritable characteristic
DESCRIPTION
Trait: an inheritable characteristic Heredity: passing of traits to offspring from its parents or ancestor Allele: an alternative form of a gene Phenotype: an organism’s observable characteristics or traits. Dominant: the expressed allele Recessive: the unexpressed allele - PowerPoint PPT PresentationTRANSCRIPT
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• Trait: an inheritable characteristic
• Heredity: passing of traits to offspring from its parents or ancestor
• Allele: an alternative form of a gene
• Phenotype: an organism’s observable characteristics or traits
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• Dominant: the expressed allele
• Recessive: the unexpressed allele
• Genotype: the genetic makeup of an organism
• Homozygous: having an identical pair of alleles for a trait
• Heterozygous: having two different alleles for a trait
• Complete dominance: when the dominant allele completely masks the effect of the recessive allele
• Co dominance: when two different alleles are both expressed
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Cat Genetics
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Agouti coat
Agouti is hair striping. Dominant alleles produce hair that are dark with light bands.
•AA or Aa = Agouti hairs
•aa – solid hairs – no agouti
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Scooter
Stripes present –
AA or Aa
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Miranda
No stripes = aa
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Tabby
Tabby is basically the background for the striping. It can be your basic stripes or in whorls or blotches.
•TT or Tt – striped
•tt - blotched
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Blitzen
Stripes
AA or Aa
Tabby –
TT or Tt
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MikiAgouti –
AA or Aa
Tabby - blotched tt
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Black coat
Fairly obvious, is there black in the cat’s coat.
•BB or Bb – Black pigment
•bb – brown pigment
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Buddy
Agouti – AA or Aa
Tabby – TT or Tt
Black – BB or Bb
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Midnight Agouti – aa
Tabby - ?
Black – BB or Bb
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Havana and CubaAgouti – aa
Tabby - ?
Brown - bb
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Dilute
This codes for how the hairs are packed, or the distribution of the melanin in the hair.
•DD or Dd – normal, color is not diluted
•dd – less packing, dilute color
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Baby aa, ?T, B(B or b), D (D or d)
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Elliot A (A or a), T (T or t), B(B or b), dd
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Spotting
Spotting is when there is the absence of pigment cells. This is a co-dominant gene. The amount of white spots on the body is determined by the presence of the spotting gene.
•SS – white spots on more than ½ the body
•Ss – white spots on less than ½ the body
•ss – no white spots
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Cricket and Bliss
Cricket:
AA or Aa
TT or Tt
?B
dd
SS
Bliss: AA or Aa, tt, ?B, dd, Ss
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Furball AA or Aa, TT or Tt, BB or Bb, dd, Ss
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Donner
aa
?T
BB or Bb
DD or Dd
ss
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Silver and White gene
The silver gene makes it so that there is only pigment at the tips of hair, resulting in silver coloring.
The white gene removes all melanin from a coat, reduces the pigment in the eyes – yellow or blue, and can even cause deafness.
•II or Ii – silver
•ii – normal coloring
•WW or Ww – white
•ww - nonwhite
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JasperA(A or a)
tt
B(B or b)
D(D or d)
ss
I(I or i)
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Albi
?A, ?B, ?D, ?S, W (W or w)
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Simon ?A, ?B, ?D, ?S, W (W or w)
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Tail Length
The Manx gene reduces the length of the tail.
• MM or Mm – short/no tail
• mm – long tail
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Maggie
A(A or a)
T(T or t)
?B
dd
ss
ii
ww
M(M or m)
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Catso - male
A(A or a)T(T or t)?BddSS
iiwwmm
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Fur LengthThis is pretty self-explanatory, the length of the fur.
• LL or Ll – short hair
• ll – long hair
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Murray - Kai’s other cat
A(A or a)
tt
B(B or b)
dd
ss
ii
ww
mm
ll
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FizgigA(A or a)
T(T or t)
B(B or b)
D(D or d)
ss
ww
ii
mm
L(L or l)