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Tay-Sachs in infants is extremely lethal. Problems with motor function and sensory organs begin at around 7 months or so. Seizures occur around the age of 2. Death occurs when the infant reachs 5 years old.
Tay-Sachs in adults, however, is not necessarily lethal. Many of the disorders remain the same as they do in infants but the disease does not normally cause death in adults.
What else can I help you with?
Does TaySachs disease have a dominant or a recessive trait?
recessive
Is Lyme disease lethal?
yes, if untreated
What was the most lethal infectious disease of 1990?
Pneumonia
What is the most lethal infectious disease of 1990?
pneumonia
Is Rabies a non-lethal disease?
Unless treated, Rabies is lethal. I messes with the brain and does not allow the infected organism to properly function.
What is an example of a lethal dominant mutation?
Huntington's disease is an example of a lethal dominant mutation. It is a neurodegenerative disorder caused by a dominant mutation in the HTT gene, leading to progressive loss of motor and cognitive functions, eventually resulting in death.
A recessive lethal gene exists in a population and remains for several generations Which woman could have passed the recessive lethal allele to offspring but not have the disease herself?
a woman who is heterozygous for the gene
What is kernicterus?
Kernicterus-- A potentially lethal disease of newborns caused by excessive accumulation of the bile pigment bilirubin.
How was mumps first used?
Mumps wasn't used as anything. Mumps is a disease, and was at first very lethal.
How do dominant lethal alleles persist in populations even though their fitness is essentially zero?
Huntington's disease, where the lethal allele expresses itself very late in an individuals life. Persons carrying the dominant lethal allele does not become aware of the disease until after their reproductive age. Thus, they pass the lethal allele to their children without knowing and the allele persists.
Why are the red squirells endangered in Britain?
Because the grey squirell carries a disease that is not harmful to them, but is lethal for red squirells.
What was often the most lethal European disease that was brought to the Americas?
The winner of that dubious honor would probably be Smallpox.
