A particular trait is analyzed using a pedigree diagram. More males than females appear to be affected. This trait is probably:
a. autosomal dominant.
b. autosomal recessive.
c. sex-linked dominant.
d. sex-linked recessive.
e. None of the above
Ans: d. sex-linked recessive.
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Of the following, which is used to inhibit specific enzymes in the treatment of many bacterial and viral diseases?
A) substrate analogues B) noncompetitive inhibitors C) denaturing agents D) allosteric regulation E) hydrogenases
In an experiment to test the effect of temperature on the rate of bacterial reproduction, temperature would be the
A. standardized variable. B. independent variable. C. dependent variable. D. control variable.
In __________ speciation, a geographic barrier interrupts gene flow between populations.
Fill in the blank(s) with the appropriate word(s).
Which of the following is a by-product of the catabolism of proteins?
A) lactic acid B) acetyl-CoA C) proteases D) ammonia E) carbon dioxide