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Chromosomal reciprocal translocation of the 4th and 20th chromosome. In genetics, chromosome translocation is a phenomenon that results in unusual rearrangement of chromosomes. This includes balanced and unbalanced translocation, with two main types: reciprocal, and Robertsonian translocation.
A Robertsonian translocation. The short arms of the chromosomes (shown on right) are often lost . Robertsonian translocation (ROB) is a chromosomal abnormality where the entire long arms of two different chromosomes become fused to each other. It is the most common form of chromosomal translocation in humans, affecting 1 out of every 1,000 ...
Figure 1: The exchange of chromosomal segments between chromosomes 4 to 20. Since no segments are lost, this is a balanced translocation. The successful implantation of an embryo not only relies on a receptive uterine environment in the mother but also on the quality of the embryo itself.
Chromosomal abnormalities: Recurrent pregnancy loss is most commonly found to be caused by chromosomal abnormalities in the fetus, accounting for approximately 50% of cases. These include structural aberrations (such as chromosomal inversions, insertions, deletions, and translocations) and numerical aberrations, also called aneuploidies ...
Patau syndrome due to a translocation can be inherited. An unaffected person can carry a rearrangement of genetic material between chromosome 13 and another chromosome. This rearrangement is called a balanced translocation because there is no extra material from chromosome 13.
Shifting the blame. While Whitney Port initially felt guilt over her second pregnancy loss in January, she gained “closure” after an autopsy. Whitney Port and More Stars Share Their Fertility ...
PGD is available for a large number of monogenic disorders—that is, disorders due to a single gene only (autosomal recessive, autosomal dominant or X-linked)—or of chromosomal structural aberrations (such as a balanced translocation). PGD helps these couples identify embryos carrying a genetic disease or a chromosome abnormality, thus ...
Sowing confusion does nothing to protect women. [Opinion]