Which of the following designates a human male with Klinefelter’s Syndrome?
a. XXY
b. XY
c. XX
d. XYY
e. XO
A
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Synonymous codons protect against mutation because
A) the encoded amino acid changes to a smaller one. B) the encoded amino acid changes to a larger one. C) the encoded amino acid does not change. D) they are exposed to oxidants.
Which statement best sums up our understanding of how animals navigate during migration?
A. The mechanisms have been worked out in great detail, from the genes involved, to the brain structures, to the resulting behavior. B. We have a thorough understanding of orientation but not navigation. C. We have some understanding of the information different animals rely on (sun, stars, or magnetic fields), and some sensory structures, but beyond that the mechanisms are still mysterious. D. Animal navigation is a complete mystery.
The G + C content of a DNA sample can be estimated from its melting temperature.
Answer the following statement true (T) or false (F)
Which of the following animals are arachnids?
A) Wasps B) Beetles C) Flukes D) Spiders E) Grasshoppers