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Related Concept Videos

The Y Chromosome Determines Maleness02:19

The Y Chromosome Determines Maleness

The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
X and Y Chromosomes02:32

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...
Karyotyping01:17

Karyotyping

Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
Karyotyping01:17

Karyotyping

Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.

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Articles linked to this work by shared authors, journal, and citation graph.

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Brief communication: Restricted geographic distribution for Y-Q* paragroup in South America.

American journal of physical anthropology·2009
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Geographic patterns of genome admixture in Latin American Mestizos.

PLoS genetics·2008
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Prevalence of dopamine and 5HT2C receptor polymorphisms in Amerindians and in an urban population from Argentina.

American journal of human biology : the official journal of the Human Biology Council·2006
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Y chromosome instability in testicular cancer.

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Characterization of admixture in an urban sample from Buenos Aires, Argentina, using uniparentally and biparentally inherited genetic markers.

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Y chromosome instability in lymphoproliferative disorders.

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Related Experiment Video

Updated: Jun 20, 2026

Chromosome Preparation From Cultured Cells
07:42

Chromosome Preparation From Cultured Cells

Published on: January 28, 2014

Y chromosome structural and functional changes in human malignant diseases.

Néstor O Bianchi1

  • 1Laboratory of Molecular Population Genetics, IMBICE, CC 403, 1900 La Plata, Argentina. bianchi@imbice.org.ar

Mutation Research
|August 25, 2009
PubMed
Summary

Y chromosome abnormalities like deletions and gene deregulation are common in cancer but likely do not cause cell transformation. These Y chromosome changes may influence tumor progression in some cancers.

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Last Updated: Jun 20, 2026

Chromosome Preparation From Cultured Cells
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Area of Science:

  • Genetics
  • Oncology
  • Evolutionary Biology

Background:

  • The Y chromosome undergoes significant changes in cancer, including microdeletions, loss, and gene transcription deregulation.
  • The evolutionary history of the Y chromosome involves complex mutations, but its role in cancer etiology remains unclear.

Purpose of the Study:

  • To investigate the role of Y chromosome abnormalities in the origin and evolution of malignancies.
  • To explore whether Y chromosome decay mechanisms are altered in cancer cells.

Main Methods:

  • Analysis of Y chromosome microdeletions.
  • Assessment of gene transcription levels in the Y chromosome's non-recombinant region.
  • Comparative analysis of Y chromosome evolution and cancer development.

Main Results:

  • Y chromosome abnormalities (microdeletions, loss, gene deregulation) are frequently observed in testicular cancer and other malignancies.
  • Evidence suggests that compensatory mechanisms preventing Y chromosome decay may fail in cancer cells, leading to rapid Y chromosome attrition.
  • Y chromosome aberrations are unlikely to be the primary cause of cell transformation but may impact tumor progression.

Conclusions:

  • Y chromosome abnormalities in cancer likely represent a consequence of Y chromosome attrition rather than a cause of tumorigenesis.
  • While not initiating cancer, Y chromosome alterations may play a role in the progression of certain cancer types.