If a cat is white, ? - briefly
If a cat is white, it may have a genetic mutation that affects melanin production, resulting in a lack of pigment in its fur. This trait is often associated with deafness due to the same gene affecting both coat color and hearing.
If a cat is white, ? - in detail
If a cat is white, it indicates that the feline possesses a specific genetic trait that determines its coat color. The primary factor influencing a cat's white fur is the presence of a gene known as the white spotting gene, often denoted as W or S. This gene inhibits the production of melanin, which is the pigment responsible for giving fur its color. The absence or reduced amount of melanin results in a white coat, as there are no other pigments present to create shades of grey, brown, or black.
Furthermore, the white spotting gene can manifest in various patterns and degrees, leading to different types of white coats. For instance, a cat with a high degree of white spotting might have a completely white coat, while one with a lower degree may exhibit patches of white fur interspersed with other colors. Additionally, the white spotting gene can affect not only the coat but also the eyes and inner ear, potentially leading to blue or odd-colored eyes (heterochromia) and deafness in some cases.
It is important to note that while many white cats may exhibit these traits, not all white cats are affected by deafness or have blue eyes. The exact manifestation of the white spotting gene can vary greatly among individual cats. Moreover, the gene responsible for albinism, which also results in a lack of melanin production, can sometimes be confused with the white spotting gene. However, true albino cats typically have pink or red eyes and are quite rare compared to those with white coats due to the white spotting gene.
In summary, if a cat is white, it signifies the expression of a specific genetic trait that controls melanin production in its fur. This trait can present in various patterns and degrees, potentially affecting not only the coat but also other features such as eye color and hearing ability.