The acellular infectious agent in Figure 13.1 is most likely a (bacteriophage/prion/viroid).
Fill in the blank(s) with the appropriate word(s).
bacteriophage
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Crossing over is facilitated by a ____ orientation between homologous chromosomes
a. tightly angled b. separated, perpendicular c. tight, perpendicular d. separated, parallel e. tight, parallel
____ are short sections of underground stem encased by overlapping layers of thickened, modified leaves called
scales. a. Stolons b. Rhizomes c. Bulbs d. Corms e. Tubers
Which of the following are considered fossils?
A) Footprints or other impressions preserved in stone B) Mineralized bones C) Animals frozen in ice or preserved in amber D) All of these
Which of the following recruits proteins to form a kinetochore at the centromere?
A) kinesin B) cytoplasmic dynein C) CENP-A D) cohesin E) APC