An ultrasound of pregnant woman detects a fetus and similarly sized and shaped structure that has...

An ultrasound of pregnant woman detects a fetus and similarly sized and shaped structure that has disorganized remnant of facial features at one end. Amniocentesis reveals that the fetus is 46,XX, but cells of the other structure are 47,XX. Trisomy 2. No cases of trisomy 2 infants have ever been reported. However, individuals who are mosaic for trisomy 2 have collection of defects, including a rotated and underdeveloped small intestine, a small head, hole in the diaphragm, and seizures.

How do the chromosomes of cells from the fetus and the other structure differ?
What is the process that occurred during meiosis to yield abnormal structure?
Why are people with complete extra chromosome 2 not even, seen though people with an extra chromosome 21 can live many years?
List 2 factors that affect the type and severity of abnormalities in an individual who is an aneuploid mosaic.

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gladiator answered 1 year ago

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