The reason segmental duplications pose a logistical challenge in the proper alignment of DNA sequences is that they
A. contain large numbers of LINEs, which interfere with sequence annotation.
B. are inherently repetitive.
C. interfere with BLAST analysis.
D. are often found in areas of constitutive heterochromatin.
Answer: B
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In one set of experiments she succeeded in increasing acetlylation of histone tails. Which of the following results would she most likely see?
A) increased chromatin condensation B) decreased chromatin condensation C) activation of histone tails for enzymatic function D) decreased binding of transcription factors E) inactivation of the selected genes
Eukaryotic chromatin can be described in topological terms as a series of:
A. constrained segments. B. constrained loops. C. relaxed linear segments. D. relaxed loops. E. plectonemic supercoils.
What results would you expect if mitochondria are inherited uniparentally from the a strain?
A) Some, but not all, yeast colonies found on the plate without chloramphenicol will also grow on the plate with chloramphenicol. B) All of the yeast colonies on the plate without chloramphenicol will also grow on the plate with chloramphenicol. C) Many yeast colonies will grow on the plate without chloramphenicol and no colonies will grow on the plate with chloramphenicol. D) No colonies will grow on either plate.
Refer to Figure 53-5. The survivorship curve for elephants would be represented by the curve labeled:
a. A
b. B
c. C
d. Either A or C. It would depend upon the species.
e. Elephant populations would be better represented by a curve falling between A and B.