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Related Concept Videos

Pleiotropy01:33

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
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Oogenesis,  the process of developing egg cells (female gametes), occurs within the ovaries and is fundamental to female fertility. This sequence begins during fetal development when diploid oogonia in the developing ovaries undergo mitotic divisions to produce primary oocytes. By birth, these primary oocytes enter prophase I of meiosis but become arrested in this stage, remaining suspended until puberty.
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Polytene Chromosomes02:04

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Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also regularly...
Polytene Chromosomes02:04

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Related Experiment Video

Updated: Jun 13, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
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Published on: August 9, 2024

Osteopoikilosis.

S A Hasan1, A B Siddiq, A Moula

  • 1Department of Physical Medicine and Rehabilitation, Chittagong Medical College, Chittagong, Bangladesh. suzon_rmc@ yahoo.com

Mymensingh Medical Journal : MMJ
|April 17, 2010
PubMed
Summary
This summary is machine-generated.

Osteopoikilosis, a rare genetic disorder, presents as dense bone lesions found incidentally on X-rays. This case highlights its diagnosis and successful management of hip pain in a young man.

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Area of Science:

  • Medical Genetics
  • Radiology
  • Orthopedics

Background:

  • Osteopoikilosis is a rare, autosomal dominant genetic disorder.
  • Also known as Albers-Schonberg disease, it's characterized by multiple, symmetrical, dense bone lesions.
  • Its etiology remains largely unknown.

Observation:

  • A 30-year-old male presented with left hip joint pain and restricted movement.
  • Radiological studies revealed typical osteopoikilosis features.
  • Differential diagnoses including osteoblastic metastasis were excluded.

Findings:

  • The case confirmed typical radiological findings of osteopoikilosis.
  • Investigations ruled out other bone pathologies like tuberous sclerosis and synovial chondromatosis.
  • The patient experienced significant improvement in joint pain and mobility.

Implications:

  • This case underscores the importance of recognizing osteopoikilosis incidentally.
  • Effective management involves both pharmacological and non-pharmacological treatments.
  • Early diagnosis and intervention can significantly improve patient outcomes and quality of life.