Sea anemones are
a. polyp forms of cnidarians.
b. medusae forms of cnidarians.
c. spongiforms of cnidarians.
d. spongiforms of echinoderms.
e. polyp forms of echinoderms
A
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What does detection of a fluorescent signal from one of the spots of a DNA microarray indicate?
A. The probe hybridized to the sequences present in that spot B. The probe did not hybridize to that particular gene C. The experiment was not conducted correctly D. That the probe was non-specifically trapped by the material present in the spot.
Which of the following items will not help treat or eliminate the symptoms of genetic disorders?
a. Dietary controls b. Hormone replacement therapy c. Exposure to carcinogens d. Prescription drugs e. Surgery
Repressible genes are usually actively transcribed when:a
repressor molecules bind to the promoter. b. the supply of the end product formed by the enzymes encoded by these genes is low. c. tryptophan accumulates in the cell. d. quantities of precursor materials are high. e. there is no other substrate that can be used by the cell.
At __________, the fusion of two gametes produces a(n) __________.
Fill in the blank(s) with the appropriate word(s).