Genetics
There are two varieties of this breed: hairless and powderpuff. Genetic heritage is of great importance for this breed. Its situation is similar to that of the Peruvian Hairless Dog. The gene that produces the hairless variety is the dominant one. The powderpuff variety appears when the dominant gene is missing. The zygotes with the dominant homozygous gene pair are not able to survive, being absorbed by the uterus. In other words, a pair comprising two dominant genes is not viable. Therefore, all hairless specimens are heterozygous, which means they have one dominant gene (the hairless one) and one recessive gene. The powderpuff variety has a pair of recessive genes and that is why the specimens of this variety are covered with hair. When two specimens of the hairless variety are mated, their offsprings will be of the powderpuff variety. However, when two powderpuff specimens are mated, their offsprings will also be powderpuff, because the dominant gene that causes the absence of hair does not exist.
Hairless (Hh) x Powder (hh) -> 50% hairless (Hh) and 50% powder (hh) puppies
|
H |
h |
h |
Hh |
hh |
h |
Hh |
hh |
Hairless (Hh) x Hairless (Hh) ->
|
H |
h |
H |
HH |
Hh |
h |
Hh |
hh |
Powder (hh) x Powder (hh) ->
|
h |
h |
h |
hh |
hh |
h |
hh |
hh |