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Jacobs Syndrome
7
Jacobs
Syndrome
Created by Max J and Anastasia T
What is Jacobs Syndrome?
Jacobs Syndrome
Jacobs is a syndrome that occurs after nondisjunction, usually in the sperm cell before conception. Rarely, the cell division error occurs after conception resulting in some cells with 46 chromosomes and some with 47 chromosomes. Jacobs can affect any population in the world, and 1 in every 1,000 people have it. Most people with Jacobs do not have fertility issues and have "normal" physical features. The disorder does not impact life expectancy.
rarediseases.org/rare-diseases/xyy-syndrome/#causes
evolvegene.com/genetic-disorders-carrier-screens/jacob-syndrome-47xyy/
"Normal" Karyotype
Karyotype 1
www.pathology.washington.edu/galleries/cytogallery/main.php?file=human%20karyotypes
Jacobs Karyotype
Karyotype 2
xyyaustralia.org/what-is-xyy-syndrome/
Non-disjunction Disorders
Non-Disjunction
Non-disjunction is defined as 'the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of chromosomes in the daughter nuclei'.
quizlet.com/39596665/mitosis-and-meiosis-flash-cards/
biologywise.com/what-is-nondisjunction-what-are-its-effects
Symptoms
Symptoms
Symptoms vary greatly between individuals with Jacobs Syndrome, but the most common symptoms are:
- Tall Stature
- Developmental delay with speech and motor skills
- Weak muscles
- Hand tremors
- Behavioral issues
- Learning disabilities
- Autistic spectrum disorders
intersexual.wordpress.com/about/47-xyy/
Treatment
Treatment is different for each individual because those with Jacobs have different symptoms.
Treatment may include:
- Physical, occupational, or speech therapy
- Special-ed plans
- Psycological and counseling support
Treatment
Any Questions?
Compiled Sources:
The End!
- rarediseases.org/rare-diseases/xyy-syndrome/#causes
- evolvegene.com/genetic-disorders-carrier-screens/jacob-syndrome-47xyy/
- www.pathology.washington.edu/galleries/cytogallery/main.php?file=human%20karyotypes
- xyyaustralia.org/what-is-xyy-syndrome/
- quizlet.com/39596665/mitosis-and-meiosis-flash-cards/
- biologywise.com/what-is-nondisjunction-what-are-its-effects
- intersexual.wordpress.com/about/47-xyy/