Which type of study observes specific human populations for unusually high levels of a disease?
A) a case-control study
B) a cross-sectional survey
C) an ecological study
D) a correlational experiment
C
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Most digestion occurs and most nutrients and water are absorbed in the __________. Fill in the blank(s) with the appropriate word(s)
Which of the following best explains why a particular atom may not form compounds easily?
A) The atom has an uneven number of protons. B) The atom's outer energy shells are completely full. C) The atom has seven electrons in its outer shell. D) The atom has no electrons.
In the figure, the star represents a recent mutation at a gene locus. The letters represent other loci. B Which other locus is most likely to be in linkage disequilibrium with the mutation (all else being equal; assume a sexually reproducing organism)?
A. Based on the supplied information, there is equal probability of linkage disequilibrium at all loci. B. D C. A D. C E. B
In Drosophila, the female is the ________ sex
A) homogametic B) mosaic C) genic balance D) heterogametic E) isogametic