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Ectopic pregnancy is responsible for 6% of maternal deaths during the first trimester of pregnancy making it the leading cause of maternal death during this stage of pregnancy. [ 1 ] Between 5% and 42% of women seen for ultrasound assessment with a positive pregnancy test have a pregnancy of unknown location, that is a positive pregnancy test ...
Ectopic recombination can occur during both meiosis and mitosis, although it is more likely occur during meiosis. [3] It occurs relatively frequently—in at least one yeast species (Saccharomyces cerevisiae) the frequency of ectopic recombination is roughly on par with that of allelic (or traditional) recombination. [4]
Ectopic recombination is typically mediated by sequence similarity at the duplicate breakpoints, which form direct repeats. Repetitive genetic elements such as transposable elements offer one source of repetitive DNA that can facilitate recombination, and they are often found at duplication breakpoints in plants and mammals. [2]
An ectopic pregnancy is a common complication that can be life-threatening to the mother if left untreated. Here's what you need to know.
Ectopic expression is an abnormal gene expression in a cell type, tissue type, or developmental stage in which the gene is not usually expressed. [ 1 ] [ 2 ] The term ectopic expression is predominantly used in studies using metazoans, especially in Drosophila melanogaster for research purposes.
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With ectopic pregnancies back in the news, here's what you need to know.
Ovarian pregnancy refers to an ectopic pregnancy that is located in the ovary. Typically the egg cell is not released or picked up at ovulation, but fertilized within the ovary where the pregnancy implants. [1] [2] [3] Such a pregnancy usually does not proceed past the first four weeks of pregnancy. [3]