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Is hemophilia caused by a dominant allele on the x chromosome true or false?
Wiki User
∙ 8y ago
false
Wiki User
∙ 8y ago
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Is hunters disease dominant or recessive?
Huntingdons chorea is caused by a dominant allele.
Is hemophilia A sex-linked?
No. It is caused by a recessive allele on the X chromosome.
Why is hemophilia more common in males than women?
this disease is caused by a recessive allele that is found only on the x chromosome. a human female has two x chromosomes. a human male only has 1 x chromosome. therefore, a male needs only one recessives allele to have hemophilia, while a female needs two recessive allele. as a result, hemophilia is much more common in males.
What is caused by a dominant allele located on an autosome?
The dominant allele will cause the appearance of the phenotype that this dominant allele represents...
Is waardenburg syndrome caused by a dominant or recessive allele?
Autosomal dominant allele
A gene on the female chromosome having no allelic partner on the y chromosome would be what?
An individual (male) with an allele on the X chromosome but no corresponding allele on the Y chromosome is described as hemizygous. Genes which are inherited in this way are described as sex-linked or X-linked. An example is hemophilia - the inability of the blood to clot. It is caused by a recessive allele, so males only need to inherit one copy to develop the characteristic. Females can inherit one hemophilia allele and one normal allele, so they can act as carriers of the disease without developing it themselves. See http://en.wikipedia.org/wiki/X-linked_gene
Is the allele causing huntington's disease dominant or recessive?
Huntington's disease is caused by a dominant allele
Is Hemophilia mutated allele that produces a defective form of the protein hemoglobin?
False; Hemophilia is caused by a mutated allele that produces a defective form of the protein fibrin.Sickle Cell Disease is caused by a defective form of hemoglobin.
Is it true that a defective allele always recessive and a normal allele always dominant?
No. The gene that causes Huntington's is caused by an autosomal dominant mutation, and one form of inherited Parkinson's is also caused by an autosomal dominant mutation.
What is a sex- linked disorder caused by a reccessive allele on the x chromosome?
yes
What disease is caused by a dominant allele of a single gene?
Huntington's Disease
Why is hemophilia more common in males than in females?
The genes associated with Hemophilia A and B are located on the X chromosome, which is one of the 2 sex chromosomes. For males, who have only 1 X chromosome, 1 altered copy of the gene in each cell is sufficient to cause hemophilia. In females, who have 2 X chromosomes, a mutation would have to occur in both copies of the gene to cause hemophilia. Since it is unlikely that females will have 2 altered copies of this gene it is therefor very rare for females to have hemophilia.
