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Jacobs syndrome, characterized by the presence of an extra Y chromosome (47,XYY), is not a dominant condition. It typically arises from a random error during cell division, leading to the extra chromosome in males. The syndrome is usually not inherited and does not follow Mendelian inheritance patterns, as it occurs sporadically rather than being passed down through families. Most individuals with Jacobs syndrome may not exhibit significant symptoms and often remain undiagnosed.

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2mo ago

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Jacobs syndrome, also known as XYY syndrome, affects males. It is a genetic condition caused by the presence of an extra Y chromosome in males.


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Jacobs syndrome is named after Dr. D. H. Jacobs, who first described the condition in 1961. It is a genetic disorder resulting from the presence of an extra Y chromosome in males, leading to a 47, XYY karyotype. Individuals with Jacobs syndrome may exhibit certain physical and behavioral characteristics, although many lead typical lives.


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Jacobs Syndrome, also known as XYY syndrome, is a genetic condition in males where they have an extra Y chromosome. This can lead to taller height and potential developmental delays or learning disabilities, although symptoms can vary widely. It is important for individuals with Jacobs Syndrome to receive appropriate support and medical care based on their individual needs.


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