Influence of advanced age of maternal grandmothers on Down syndrome

• मुख्य लेखकों: Ramachandra Nallur B (लेखक), Malini Suttur S (लेखक)
• स्वरूप: पुस्तक
• प्रकाशित: BMC, 2006-01-01T00:00:00Z.
• विषय: article
• ऑनलाइन पहुंच: Connect to this object online.

<p>Abstract</p> <p>Background</p> <p>Down syndrome (DS) is the most common chromosomal anomaly associated with mental retardation. This is due to the occurrence of free trisomy 21 (92-95%), mosaic trisomy 21 (2-4%) and translocation (3-4%). Advanced maternal age is a we...