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The main strength of the tail suspension test is its predictive validity– performance on the test can be altered by drugs that improve depressive symptoms in people. Specifically, if antidepressant agents are administered before the test, the animal will struggle for a longer period of time than if not and exhibit more escape behaviors. [1]
A longy white Manx female. Although tail suppression (or tail length variety) is not the sole characteristic feature of the breed, [5] the chief defining one of the Manx cat is its absence of a tail to having a tail of long length, or tail of any length between the two extremes. [23]
Cats with the heterozygous genotype (Mm) show severely shortened tail length, ranging from taillessness to a partial, stumpy tail. [3] Some Manx cats die before 12 months old and exhibit skeletal and organ defects. Because it was discovered in naturally occurring populations of cats, the Manx gene could confer some kind of selective advantage ...
A lethal allele may refer to any allele encoding the disease that results in a terminal condition only in the homozygous or biallelic state. The heterozygous and homozygous phenotype is still expressed in most cases if two different disease-causing alleles are present. Achondroplasia is a skeletal system disorder caused by a recessive allele ...
The Mekong Bobtail—a colorpoint cat breed with a bobbed tail. More than one gene is responsible for tail suppression in cats; research is incomplete, but it is known that the Japanese Bobtail and related breeds have a different mutation from that found in the Manx and its derivatives. American Bobtail
The Manx cat (/ ˈ m æ ŋ k s /, in earlier times often spelled Manks) is a breed of domestic cat (Felis catus) originating on the Isle of Man, with a mutation that shortens the tail. Many Manx have a small stub of a tail, but Manx cats are best known as being entirely tailless; this is the most distinguishing characteristic of the breed ...
The Cymric is a muscular, compact, medium to large cat with a sturdy bone structure, but the lack of a tail can make them appear small. [14] Males of this Canadian cat breed can weigh up to 12 pounds, while, female usually weigh between 8 and 12 pounds. [15] They have a rounded appearance and their front legs are shorter than their hind legs. [4]
Manx cat, a domestic cat (Felis catus) with genetic abbreviation of the tail, which may range from no tail at all to essentially full-size. Developed as a standardised breed in the late 19th century, the Manx cat has become a popular breed worldwide, but is in danger of disappearing on the island itself, as it is being out-bred by other cats ...