To study the genome of the loblolly pine, Pinus taeda, researchers obtained DNA from ____ cells, thereby halving the

amount of DNA for initial sequencing.



a. haploid
b. diploid


c. triploid
d. polyploid
e. hexaploid


ANSWER: a

Biology & Microbiology

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Figure 17.2 In Figure 17.2, What portion will typically attach to a host cell? e a and d a and c b b and c

img

A) a and c
B) b
C) b and c
D) a and d
E) e

Biology & Microbiology

In the vascular bundles of most dicot stems, primary phloem differentiates toward the ________of the stem, while primary xylem differentiates toward the ________of the stem.  

A.  middle; outside B.  cork cambium; vascular cambium C.  outside; middle D.  shoot tip; roots E.  middle; middle

Biology & Microbiology

Members of the ____ subphylum are now all extinct, but they were extremely numerous in shallow Paleozoic seas

Most of them were dorsoventrally flattened and heavily armored, with two deep longitudinal grooves that gave their body a three-lobed appearance.

a. Myriapoda b. Trilobita c. Chelicerata d. Hexapoda e. Crustacea

Biology & Microbiology

Rough endoplasmic reticulum has ribosomes on its surface.

a. true b. false

Biology & Microbiology