To inherit an autosomal dominant disorder a person could receive the disease causing allele from
a) the father only, not the mother.
b) the mother only, not the father.
c) the mother or the father.
d) the parent who does not exhibit the disease.
e) All answers are correct.
Ans: c) the mother or the father.
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You are investigating an abnormal eukaryotic cell line that makes all of its mRNAs much longer than the mRNAs from normal cells (that is, they have more nucleotides than usual). Intrigued, you examine the proteins in these abnormal cells and note that
many of them are either much longer or much shorter than the normal proteins from nonmutant cells. Assuming there is just one mutant defect in these cells, what is that defect? A. A stop codon is mutated. B. RNA polymerase does not recognize the terminator sequence. C. Release factor is defective. D. The spliceosome is nonfunctional. E. The enzyme that adds the poly-A tail is defective.
At the end of the experiment, the bacteria
a. were evenly distributed throughout the chamber. b. were clustered on the algal filament. c. were clumped along certain areas of the algal filament. d. were actively avoiding the algal filament.
Which classification level contains the greatest number of species?
a. class b. order c. family d. domain e. phylum
One threat to well-being occurs in people who _____.
A. believe they have no control over their circumstances B. accumulate too much money C. use meditation and exercise to cope with external stressors D. take charge of their own health