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Karyotyping

Karyotyping

Karyotyping

Karyotyping

Nondisjunction

Nondisjunction

During meiosis, chromosomes occasionally separate improperly. This occurs due to failure of homologous chromosome separation during meiosis I or failed sister chromatid separation during meiosis II. In some species, notably plants, nondisjunction can result in an organism with an entire additional set of chromosomes, which is called polyploidy. In humans, nondisjunction can occur during male or female gametogenesis and the resulting gametes possess one too many or one too few chromosomes.

Nondisjunction

Nondisjunction

During meiosis, chromosomes occasionally separate improperly. This occurs due to failure of homologous chromosome separation during meiosis I or failed sister chromatid separation during meiosis II. In some species, notably plants, nondisjunction can result in an organism with an entire additional set of chromosomes, which is called polyploidy. In humans, nondisjunction can occur during male or female gametogenesis and the resulting gametes possess one too many or one too few chromosomes.

X and Y Chromosomes

X and Y Chromosomes

Among mammals, the gender of an organism is determined by the sex chromosomes. Humans have two sex chromosomes, X and Y. Every human diploid cell has 22 pairs of autosomes and one pair of sex chromosomes. A human female has two X chromosomes, while a male has one X chromosome and one Y chromosome.
The germline cells such as egg and sperm cells carry only half the number of chromosomes, i.e., 22 autosomes and one sex chromosome. All eggs have an X chromosome, while sperm cells can carry an X or...

Sex Linked Disorders

Sex Linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.

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Related Experiment Video

Updated: May 15, 2026

Chromosome Preparation From Cultured Cells

Chromosome Preparation From Cultured Cells

Published on: January 28, 2014

Klinefelter syndrome: Case report.

F Capasso¹, F Panetta, G Ierardo

¹University Sapienza of Rome, Italy, Department of Pediatric Dentistry.

ORAL & Implantology

|January 4, 2013

Summary

This summary is machine-generated.

Klinefelter syndrome presents unique challenges in pediatric dentistry, requiring early dental monitoring and intervention. This case highlights the importance of interceptive therapy for children with this genetic condition.

Keywords:

Klinefelter syndrome chromosomal abnormality oral aspects

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Area of Science:

Pediatric Dentistry
Genetics
Child Health

Background:

Klinefelter syndrome (47,XXY) is a genetic condition affecting males.
It can lead to various developmental and health issues, including those impacting oral health.
Early identification and management are crucial for affected children.

Observation:

A clinical case of a child with Klinefelter syndrome was followed by Pediatric Dentistry.
The case focused on identifying and addressing dental problems associated with the syndrome.
Specific oral health concerns were noted during the patient's growth period.

Findings:

Children with Klinefelter syndrome may experience specific dental issues requiring specialized care.
Interceptive therapy is vital for correcting functional interferences during a child's development.
Prompt dental monitoring is essential for managing oral health in these patients.

Implications:

Pediatric dentists must be aware of the potential dental manifestations of Klinefelter syndrome.
Early and consistent dental care can mitigate long-term oral health problems.
This highlights the need for a multidisciplinary approach to managing children with genetic conditions.