Studying the distribution of alleles in a population is particularly challenging because of the numerous phenomena that disrupt the distribution of alleles, ranging from isolation to mortality in more vulnerable individuals. Therefore, a distribution of alleles in a population as represented by Hardy-Weinberg's law is impossible. The chromosome carrying the gene(s) responsible for proper hair structure, composition, and length can undergo negative mutations, but these do not result in mortality dependent on the mutation itself, i.e., a so-called self-negative mutation. It is possible that the "Sampson" mutation is influenced by multiple gene mutations, as more than one gene is likely responsible for hair distribution and structure, as well as for the proper production of keratin and the regulation of hormones (responsible for proper hair growth in the skin).
Probable population distribution of foxes with Sampson's disease:
Hardy and Weinberg equation:
p2+2pq+q2=1
p2-dominant allele q2-recessive allele Total number of individuals in the population: 1 100%
Number of hairless individuals: 0.005-0.02 0.5-2%
Probable cycle taking into account natural factors Assuming the above example, the probability will be:
Number of individuals in the population: 450
Number of hairless individuals: 2-9
Since 1991, people in Androscoggin County have reported sightings of a mysterious beast, considered by many to be the classic American canine, the Chupacabra. For years, it has been reported that an unknown dog-like creature existed in Maine. Many identified the beast as some American variant of the Carolina dingo, a hyena, or a feral, aggressive dog. Witnesses described the animal as having yellow eyes and a rasping sound. The animal killed in 2006 was identified as such a Chupacabra. The animal died on the road while chasing a cat and was likely hit by a car. "This is an animal like no other I've ever seen," said Mike O'Donnell, who lives near the site where the animal died. "It's the image of evil. It looks like half dog, half rodent," he recalled. A photograph was taken and witness accounts were compiled. Just a week before his death, an American woman noticed this hideous, foul-smelling animal wandering around her home. Renowned cryptozoologist Coleman suggested the animal might have been a dog-wolf hybrid. DNA testing later revealed the animal was merely a common mutt with a unique morphology. Perhaps such mutts were the source of the legends about the Beast of Maine? Coleman, however, suggests that a real beast does indeed exist somewhere and may look just as people describe it.
A month later, the Lost World Museum acquired the remains of some kind of animal. The small creature resembled a fox, with yellow eyes and an orange stripe running down its body against its bald back. It appears the animal was another victim of scabies mites, as evidenced by the lack of hair in some areas.
Meanwhile, in England, in Lytham, particularly in Lancashire, reports of some dog-like animal roaming near forests and human habitation were also reported. For this reason, it was nicknamed the "Beast of Green Drive." Many theories arose as to what the animal was: a feral dog, a sick fox, or perhaps a muntjac. Some said it looked like the Hound of the Baskervilles. The animal had large ears and was about the size of a Scottish Shepherd. To this day, this mystery remains unsolved, but it is known that we were dealing with a known species. The animal never attacked anyone, nor did it behave aggressively. Despite this, it caused considerable confusion. Some claimed it was the result of delusional imaginations brought on by excessive drinking. However, 20 reported encounters in which people referred to the animal in a similar manner cannot explain a collective delusion. Among those who provided descriptions of the animal were a painter and a cartoonist. Many believe the animal so often seen could have been a greyhound suffering from scabies. So, can the chupacabra and its local varieties be described as a scabies-afflicted canid? That would seem to be the case. So many cases of chupacabras described as mysterious creatures turned out to be a common, common disease.

Chupacabra (portrait)
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