Of the following human aneuploidies, which is the one that generally has the most severe impact on the health of the individual?
A) 47, trisomy 21
B) 47, XXY
C) 47, XXX
D) 45, X
A
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Laser tweezers are used for
A) testing the purity of a culture. B) isolating individual cells. C) separating aerobes from anaerobes. D) enhancing the growth of fastidious organisms.
When DNA is cut with a restriction enzyme, the resulting fragments have
A) 5' carboxyls. B) 5' hydroxyls. C) 3' hydroxyls. D) 3' phosphates. E) 3' carboxyls.
A C/N ratio of 134:1 will usually lead to immobilization
Indicate whether the statement is true or false
The point at which various factors that influence the level of some regulated function (such as body weight) achieve an equilibrium; the idea is that as body-fat levels increase, changes occur that tend to limit further increases until a balance is achieved between all factors that encourage weight gain and all those that discourage it
What will be an ideal response?