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A person can be tested for the allele that causes Tay-Sachs disease because the what of that allele is different from that of the normal allele?
DNA sequencing
What is the nervous system that breakdown that is caused by an autosomal recessive allele?
achondroplasia
What are dominant and recessive alleles?
a dominant allele is an allele that takes over the recessive allele and a recessive allele is a trait that is skipped or held backDominant: Tongue Roller Free (Unattached) Earlobes Farsightedness Astigmatism Freckles Dimples in cheeks Feet with normal arches PTC taster Widow's Peak Double-jointed thumb Broad lips Polydactyly (Extra fingers and toes) Syndactyly (Webbed digits) Achondroplasia (herterozygous: dwarfism; homozyogous: lethal) Huntington's disease Normal skin pigmentation Absence of Tay-Sachs disease Normal Mentation Recessive: Inability to rill tongue into U shape Attaches earlobes Normal vision Absence of freckles Absence of dimples Flat feet PTC nontaster Straight hairline Tight thumb ligaments Thin lips Normal number of fingers and toes Normal digits Normal carilage bone formation Absence of huntington's disease Albinism Tay-Sachs disease Cystic Fibrosis Schizophrenia (Courtesy of "Human Anatomy and Physiology)
Is alzheimer's disease sex linked or autosomal?
Tay-sachs is autosomal.
Is tay-sachs disease lethal?
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.
When was Sachs' Disease created?
Sachs' Disease was created in 1999.
If a husband is a carrier of Tay-Sachs and his wife is homozygous normal what are the chances of the children having tay-sachs?
This depends on the type of condition that Tay-Sachs is.Seeing that Tay-Sachs can be "carried" and not expressed, it is possible that it is a recessive condition. As such, the husband must be heterozygous, with an allele for Tay-Sachs, and a normal one.Since his wife is homozygous normal, and taking into account the fact that one allele is taken from each parent, it is not possible for the children to have Tay-Sachs. However, the children may be carriers.Note: This answer assumes that the gene for Tay-Sachs works in isolation.Edit: this is a valid answer, it may have been misunderstood by the questioner. Since the disease is recessive, a 'carrier' like the husband would be heterozygous (carrying one allele for Tay Sachs disease and the other allele is 'normal'). If you could be sure that the wife is definitely homozygous 'normal' (ie both alleles are 'normal'), and that the gene works in isolation, then the first answerer is right, there is no chance that a child would have Tay Sachs disease but there would be a 50% chance that the child would be a carrier . However, unless the wife has been definitively genotyped for this disease, there is always the chance that she is a carrier also which could result in children with Tay Sachs disease.It is 50% for the children to get the Tay-Sachs from the father, because the mother doesn't have any disease, do it is half.This answer is satifactory to anyone who knows anything about biology. The simple answer is none of the children will have it but there is a 50% chance of them being carriers. As stated above.
Tay-Sachs disease is a human?
Tay-Sachs disease is a human genetic disorder.
What effect does Tay Sachs disease have on the body?
what effect does Tay-sachs disease have on the body?
What system or part of the body does tay sachs disease affect?
what effect does Tay-sachs disease have on the body?
How does Tay-sachs disease differ from an infectious disease such as pneumonia?
Tay-sachs disease differs from an infectious disease because it is a hereditary disease, so it can only be passed from parents to their offspring.
How often does Tay-Sachs disease occur in the population?
About 16 cases of Tay-Sachs disease are diagnosed each year.
