Dog coat types

Question 1

double vs single coat

Answer 1

-double has 3 layers
-single has 2
-can be short or long variations of each

Question 2

coat length genetics

Answer 2

-short (L) is dominant, long hair (l) is recessive
-fibroblast growth factor 5 (FGF5) mutation

Question 3

different FGF5 mutations

Answer 3

-l1 most common variant in various breeds
-l2 akita, samoyed, siberian huskey, eurasier
-l3 eurasier
-l4 afghan hound, eurasier, french bull dog
-l5 afghan hound

Question 4

coat texture genetics

Answer 4

-found at the W locus
-smooth hair is the wild type
-wire hair “furnishings” WW or W/w
-dominant inheritance
-RSPO2 gene
-insertion of 167 bp at 3’ non coding region
-differences for homo and hetero

Question 5

curly coat genetics

Answer 5

-incomplete dominant
-CC= curly
Cc= wavy
cc= straight
-KRT71 mutation arg151–>trp
-mutation found in rex cats
-same with mice

Question 6

dominant hairless coat characteristics

Answer 6

-Chinese crested and xolo
-hair missing on most of the body
-pp=powder puff
-Pp=show quality (effects teeth, not healthy)
-PP=lethal
-dominant mutation
-FOXI3 mutation-premature stop resulting in 95% of gene missing

Question 7

recessive hairless coat charicteristics

Answer 7

-completely hairless
-recessive mutation (h/h)
-mutation is NOT lethal in homozygous form
-serum/glucocorticoid regulated kinase family member 3 (SGK3) mutation- premature stop