Mean platelet volume (MPV) in humans increases with heart attacks and strokes and is used to predict recurrence as well as mortality. MPV has high heritability
A recent GWA study found MPV to be associated with SNPs on chromosomes 12, 3, and 17, respectively. These three QTLs accounted for 4-5% of MPV variance. Which of the following is a reasonable explanation? A) Other loci may also account for significant variance of MPV.
B) These SNPs must be translocated or transposed alleles.
C) Monitoring of these SNPs should identify those at highest risk.
D) The three SNPs, when sequenced, should show high conservation.
E) The three SNPs will be found in genes responsible for stroke.
A
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According to the latest research, which of the following best describes the first eukaryote?
a. It lacked a nucleus, a mitochondrion, or a chloroplast. b. It lacked a nucleus, but contained a mitochondrion and a chloroplast. c. It contained a nucleus and a chloroplast, but not a mitochondrion. d. It contained a nucleus and a mitochondrion, but not a chloroplast. e. It contained a nucleus, a mitochondrion, and a chloroplast.
Ricin is
a. a substance found in castor bean seeds. b. a polysaccharide extracted from rice. c. an ingredient in many paints and cosmetics. d. a protein that inactivates ribosomes. e. a substance found in castor bean seeds and a protein that inactivates ribosomes.
If a woman is homozygous for a particular X-linked disease, she will pass the disease on to ________ of her sons.
Fill in the blank(s) with the appropriate word(s).
If the foods preferred by each species are found on different parts of the island, and if the flies mate and lay eggs on their food sources, regardless of the location of the food sources, then the speciation events involving these fly species may have been driven, at least in part, by which of the following?
A) autopolyploidy B) allopolyploidy C) species selection D) genetic drift E) habitat differentiation