Which test is carried out 15 to 20 weeks into the pregnancy and allows the analysis of fetal cells that can identify a variety of genetic defects with nearly 100 percent accuracy?
a) Chorionic villus sampling (CVS)
b) Ultrasound sonography
c) First-trimester screen
d) Amniocentesis
Answer: d
Psychology
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Healthy babies often cry
A) at the sound of another crying baby. B) in shrill, piercing tones. C) because they are bored. D) all night long.
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The small gap between brain cells that is involved in message transmission is called the
a) neurotransmitter. b) axon. c) ganglion. d) synapse.
Psychology