Recently, a gene located on chromosome 3 in humans, FHIT, has been shown to be associated with ________
A) Huntington disease
B) several types of cancer
C) "mad-cow" disease
D) XYY/XY mosaicism
E) Klinefelter syndrome
B
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In your textbook, there is a discussion of the experiment by Wigglesworth that demonstrated that PTTH (prothoracicotropic hormone) triggers molting and the release of ecdysone
In 1984, Nagasawa et al. published a paper entitled: "Amino-terminal amino acid sequence of silkworm prothoracicotropic hormone: homology with insulin." The similar amino acid sequence between PTTH and insulin suggests that: A. a common ancestral peptide evolved into peptides with different functions in insects and invertebrates. B. if PTTH were given to vertebrates it would likely trigger glucose uptake by cells. C. insulin causes molting in vertebrates.
Would drinking a gallon of tap water, a gallon of sea water, or a gallon of beer produce the most urine? Which would
produce the least urine? Why?
What will be an ideal response?Oxidation-reduction reactions
A. remove electrons from both molecules involved. B. remove protons from one molecule and join them to another molecule. C. never occur at the same time. D. remove electrons from one molecule and add them to another molecule simultaneously. E. remove oxygen from the cell.
If it were found that all animals except the Parazoa had a particular set of genes, one could conclude
A. that those genes probably are related to the embryonic formation of tissues. B. that Darwin was incorrect in his idea about descent with modification. C. that those genes are not useful in interpreting phylogeny. D. that those genes are related to cell wall formation. E. that the Parazoa are not animals.