From what parents are white kittens born? - briefly
White kittens are typically born to parents that carry the dominant gene for white fur. Both parents can be completely white or carry the gene for white fur, even if they are not entirely white themselves.
From what parents are white kittens born? - in detail
White kittens are a result of specific genetic combinations, primarily involving the genes responsible for coat color and pattern. Understanding the genetics behind white kittens requires a look into the inheritance patterns of these traits.
The primary gene responsible for white fur in cats is the White Spotting gene (S). This gene is dominant, meaning that a kitten only needs to inherit one copy of the gene from either parent to exhibit white fur. However, the expression of white fur can vary widely depending on the specific allele of the S gene that is inherited.
There are several alleles of the S gene, each producing different amounts of white spotting. The most common alleles are:
- Dominant White (S): This allele results in a completely white cat. Kittens with this allele are typically born to parents who carry at least one copy of the S gene.
- White Spotting (s^w): This allele results in varying amounts of white spotting, often seen in cats with patches of white fur interspersed with other colors.
- Non-white Spotting (s): This allele does not contribute to white spotting and is recessive. Cats with this allele will not have white fur unless they inherit a dominant allele from the other parent.
In addition to the S gene, other genes can influence the appearance of white fur. For example, the albino gene (c) can produce a completely white coat, but it is often associated with blue eyes and may affect the cat's vision. The Himalayan gene (cs) can also produce a white coat, but it typically results in a cream or ivory color with points of darker color on the ears, paws, and tail.
Parents of white kittens often carry the dominant White (S) gene or other genes that contribute to white fur. It is possible for two non-white parents to produce a white kitten if both parents carry the recessive allele for white spotting. However, the likelihood of this occurring is lower compared to when at least one parent has visible white fur.
In summary, white kittens are born to parents who carry the genetic traits for white fur. The dominant White gene (S) is the most common cause of a completely white coat, but other genes and alleles can also contribute to the expression of white fur in kittens. Understanding the genetic background of the parents can help predict the likelihood of producing white kittens.