Which test is used to detect Down syndrome by collecting blood from the umbilical cord after the 18th week of pregnancy?
a) fetal blood sampling (FBS)
b) embryoscopy
c) chorionic villus sampling (CVS)
d) amniocentesis
a
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What term do sleep researchers use to designate Stages 1-4 of sleep?
A. REM sleep B. Non-REM sleep C. REMN sleep D. Paradoxical sleep
The sea dragon is a fish that looks and acts like kelp in order to attract its food. A researcher proposes that this is due to a genetic modification that expands smaller appendages already present in these fish's ancestors. What type of explanation is this?
a. functional b. evolutionary c. ontogenetic d. biological
When using operational definitions, it is important to keep in mind that the operational definition ____
a. must provide a direct measure of the construct b. must provide a valid method of measurement but need not be reliable c. should include extra components that are not part of the construct d. is not the same as the construct itself
Ovaries is to female as _______ is to male
a. fallopian tubes b. testes c. cervix d. mons