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Linda is a 32-year-old pregnant woman, and this is her first baby. However, the prenatal test...

  1. Linda is a 32-year-old pregnant woman, and this is her first baby. However, the prenatal test showed that her baby had an extra chromosome (47,XYY). Go through the reading material in week 3 and answer the questions
  1. What kind of test can give this result?
  1. If you were Linda (or her husband), are you going to keep the baby? Why?
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  prenatal test showed that her baby had an extra chromosome (47,XYY) are

a.Kind of test that gives this result are :

1.Karyotype : A test that is used to view all the chromosomes in a a cell.

2.Chromosomal microarray - with the help of this test we can look for an extra chromosome.

3.Amniocentesis or chronic villus sampling - these are the confirmatory tests.

amniocentesis confirms extra chromosome (47,XYY) .

b.If I  were Linda I going to keep the baby because :

The baby is XYY it means that he is male baby.boys with this extra Y chromosome not shows physical differences from normal man.

about 80% they are like as normal male.sometimes they are taller than normal boys.

and it is not inherited from parent.These type of males also has normal sexual development, fertility also normal.

sometimes thay may ahve symptoms like as low muscle tone or delay speech and that problems can be treated with different types of therapy.

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