In order to complete genetic testing during pregnancy, there are two ways that fetal cells can be collected
Name each of these two procedures and explain the difference between the two ways that the cells are extracted and what type of cells each procedure is attempting to procure.
What will be an ideal response?
Students' answers will vary but should contain an understanding of the following: With amniocentesis, a needle is inserted through the mother's abdomen and into the amniotic sac. Amniotic fluid is withdrawn, containing cells sloughed off from the fetus. With chorionic villus sampling (CVS), either a catheter is inserted through the vagina and into the uterus to take placental villus cells or the villus cells are extracted using a needle inserted into the placenta.
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Does taking notes improve later memory? a. Yes, always
b. It might not, if you expect to rely on your notes instead of memory later. c. It might not, if you write only the main points instead of each detail. d. It might not, if you review your notes too soon after taking them.
Discuss the research findings on the issue of reminiscence in older adults
Answer:
A sample that starts with subjects known to the experimenter, and is enlarged by adding subjects known to the first set of subjects and so on, is a(n) ____ sample
a. quota b. snowball c. heterogeneity d. expert
In a true experiment, the researcher _______ variables, and in a quasi-experiment the researcher _______ variables
a. manipulates, observes b. observes manipulates c. controls, assigns d. assigns, records