Amniocentesis or amniotic fluid test or AFT refers to the prenatal diagnosis of chromosomal abnormalities and fetal infections. It is performed after 16 weeks of pregnancy. The fetal DNA from a small amount of cells from the amniotic fluid of the amniotic sac is sampled for genetic abnormalities by inserting a needle and extracting it. The fluid contains cells that are sloughed off by the fetus. They are separated from the amniotic fluid, grown in a culture and then microscopically examined for genetic and chromosomal abnormalities. The test is a reliable indicator of chromosomal abnormalities such as Down’s syndrome, spina bifida, muscular dystrophy, rh diseasetrisomy 13, trisomy 18, fragile X, Tay-Sachs disease, Hunter's syndrome and other metabolic disorders.
Answer:
The answer is C (I can't really see. It's blurry)
<h3><em>All of your ribs attach to your spine, but only the top seven pairs connect to your sternum.</em></h3>
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<h3><em> True ribs attach directly to the sternum while false ribs are linked to the sternum through costal cartilage.</em></h3>
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<h3><em>Hope this helps!</em></h3>
For me it's letter A.
Because B and C and D are benefits of biodiversity....So that's why,for me it's letter A.
Well,don't trust me if you don't want to
