Cnidarians have ____ symmetry
a. radial.
b. asymmetric.
c. bilateral.
d. dorsal-ventral.
e. pentamerous
A
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No eukaryotic organisms have been shown to fix nitrogen without the aid of prokaryotes
Indicate whether this statement is TRUE or FALSE.
A particular gene that controls seed coat color in peas also determines the susceptibility of these peas
to a particular disease. This situation is referred to as: a. varigation. b. additive dominance. c. codominance. d. pleiotropy. e. incomplete dominance.
In meiosis, centromeres split in
A. telophase I. B. anaphase I. C. telophase II. D. anaphase II.
What does the plaque assay determine?
A) if the phage is a lysogenic phage B) type of bacteriophage in a sample C) if the virus can grow in a live animal host D) if a given drug will be useful in treating a given viral infection E) number of bacteriophage in a sample