Inheritance
Lavender foal syndrome is most commonly thought to be created by a recessive gene. When a horse is heterozygous for the gene, it is a carrier, but perfectly healthy and has no symptoms at all. If two carriers are bred together, however, classic Mendelian genetics indicate that there is a 25% chance of any given mating producing a foal that is homozygous for the gene, and hence affected by the disease. It is theorized, though not yet tested, that LFS may also be somehow linked to another genetic disease that affects Egyptian-related Arabians, juvenile epilepsy. This theory has been raised because of a small number of horses who have produced both LFS and epileptic foals.
LFS is one of six genetic diseases known to affect horses of Arabian bloodlines. There are genetic diseases that affect other horse breeds, including different coat dilution lethals, such as lethal white syndrome. In addition, the color white in horses, when created by certain alleles of "dominant white" (W) gene, may possibly be fatal if homozygous.
Read more about this topic: Lavender Foal Syndrome
Famous quotes containing the word inheritance:
“It is very difficult to be wholly joyous or wholly sad on this earth. The comic, when it is human, soon takes upon itself a face of pain; and some of our griefs ... have their source in weaknesses which must be recognized with smiling compassion as the common inheritance of us all.”
—Joseph Conrad (1857–1924)
“Someone in the crowd said to him, “Teacher, tell my brother to divide the family inheritance with me.” But he said to him, “Friend, who set me to be a judge or arbitrator over you?””
—Bible: New Testament, Luke 12:13,14.
Jesus.
“I call it our collective inheritance of isolation. We inherit isolation in the bones of our lives. It is passed on to us as sure as the shape of our noses and the length of our legs. When we are young, we are taught to keep to ourselves for reasons we may not yet understand. As we grow up we become the “men who never cry” and the “women who never complain.” We become another generation of people expected not to bother others with our problems.”
—Paula C. Lowe (20th century)