Introduction: Jacobs syndrome


Jacobs syndrome: A rare chromosomal genetic syndrome where the male person has an extra Y male chromosome, becoming XYY instead of normal XY (male) or XX (female). The person is male and may be mostly normal, or may suffer from minor features from excess male hormones, such as excess acne being very tall, and in some cases behavioral complaints such as aggression.

Statistics and Jacobs syndrome: Various sources and calculations are available in statistics about Jacobs syndrome, prevalence and incidence statistics for Jacobs syndrome, and you can also research other medical statistics in our statistics center.

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