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What is the risk factor for Turner syndrome?
What is the risk factor for Turner syndrome?
XYY syndrome is caused by a random mix-up during the formation of male's genetic ___.
XYY syndrome is caused by a random mix-up during the formation of male's genetic ___.
code
What genetic condition is characterized by an extra Y chromosome in males?
What genetic condition is characterized by an extra Y chromosome in males?
XYY syndrome
Men with XYY syndrome are likely to pass the condition to their male offspring.
Men with XYY syndrome are likely to pass the condition to their male offspring.
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Match the signs of XYY syndrome with the symptoms:
Match the signs of XYY syndrome with the symptoms:
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Study Notes
Y Chromosome Material and XYY Syndrome
Risk Factors and Complications
- All males are at risk for XYY syndrome, which is not inherited.
- Complications include:
- Heart problems (aortic valve stenosis, aortic dissection)
- Increased risk of cardiovascular diseases (high blood pressure and diabetes)
- Hearing loss (frequent middle ear infections)
- Kidney problems (malformation of the kidneys leading to high blood pressure and urinary tract infections)
Causes and Characteristics of XYY Syndrome
- XYY syndrome occurs when a male's genes have an extra Y chromosome in each cell.
- Caused by a random mix-up during the formation of the male's genetic code.
- Men with XYY syndrome may have some cells with XY chromosomes and others with XYY chromosomes.
Signs and Symptoms in Teenagers
- Autism diagnosis
- Inability to grow facial or body hair
- Attention difficulties
- Delayed motor skill development (e.g., writing)
- Delayed or difficult speech
- Delayed or absent puberty
- Emotional or behavioral issues
- Gynaecomastia
- Hand trembling or involuntary muscle movements
- Hypogonadism
- Hypotonia or weak muscle tone
Variable Symptoms
- Hypotonia
- Delayed motor skill development (e.g., walking or crawling)
- Delayed or difficult speech
- Not easily excitable (normally quiet and calm)
- Undescended testicles at birth
- Symptoms vary from patient to patient
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Description
This quiz covers the genetic aspects of XYY syndrome and Turner syndrome, including risk factors, complications, and associated health conditions.
