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Since the traits for hemophilia are carried on the X chromosome and not the Y, it is more probable for females to have a chromosome with the mutation. Since the mutation is considered recessive and males only have one X chromosome, they are more likely to portray the phenotype for hemophilia than their female counterparts.

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8y ago
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10y ago

Marfan syndrome is caused by mutations in the FBN1 gene on chromosome 15. The chromosme pattern is normal (44XY or 44XX), however see for discussion of a boy with XYY pattern and Marfan below:

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9y ago

No, the alleles for achondroplasia are not found on the sex chromosomes. The incidence is the same for both sexes.

If it was sex linked the ratio would be much higher in males and they would also essentially be

homozygous for the trait which would make the death toll in affected male babies 100%.

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14y ago

Yes, achondroplasia is a chromosomal disorder. The type of chromosomal disorder this is, is an autosomal- dominant.

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12y ago

None, cerebral palsy is caused by brain damage

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13y ago

Mutations that cause Marfan syndrome are found on FBN1 on chromosome 15. There are over 600 known mutations that cause Marfan; many families have a mutation that is unique to their family.

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13y ago

Marfan syndrome is caused by a single gene for fibrillin on chromosome 15, which is inherited in most cases from an affected parent.

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15y ago

The FGFR3 Gene.

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13y ago

chromosome 17

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9y ago

chromosome 4

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Q: What chromosome is affected by Marfan syndrome?
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