Scientists use genome-wide association studies to research which of the following?
a. viral diseases
b. single-gene inherited diseases
c. diseases caused by multiple genes
d. diseases caused by environmental factors
c. diseases caused by multiple genes
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Which statement is true about the structure of DNA?
A) It is a polymer made up of a string of amino acids. B) Each different sequence folds into a different three-dimensional shape. C) The two strands of a DNA molecule are held together by base pairing. D) It contains nitrogenous bases known as A, C, G, and U.
The replacement model of human evolution asserts that ________
a. Homo sapiens evolved directly from Homo floresiensis b. Homo sapiens arose from a single Homo erectus population in Africa c. races of modern humans had their beginnings in Homo erectus d. populations of Homo erectus in Africa evolved into Homo sapiens gradually
A protein normally synthesized in fat cells; it is thought to act as a negative feedback signal normally released by fat stores to decrease appetite and increase fat metabolism
What will be an ideal response?
For a particular microarray assay (DNA chip), cDNA has been made from the mRNAs of a dozen patients' breast tumor biopsies. The researchers will be looking for _____
A) a particular gene that is amplified in all or most of the patient samples B) a pattern of fluorescence that indicates which cells are over proliferating C) a pattern shared among some or all of the samples that indicates gene expression differing from control samples D) a group of cDNAs that match those in non-breast cancer control samples from the same population