Steroid hormone-nuclear receptor complexes:
A. have two adjacent zinc fingers in their DNA binding domain.
B. bind to DNA in their monomeric form.
C. have N-terminal ligand binding domains.
D. are expressed uniformly in all cells.
A
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In the microarray shown in the textbook, the cDNAs were labeled with red and green fluorescent tags. Why do some
spots on the microarray emit yellow light?
a. Red and green are two of the primary colors, and if both cDNAs hybridize to the spot, the combination of the two will produce yellow light. b. The yellow light comes from the laser, and a yellow spot indicates that neither cDNA hybridized to that spot on the microarray. c. The over expression of one cDNA relative to the other will skew the color pattern of the spot on the microarray, resulting in the yellow color. d. The color choice was an arbitrary decision by the artist and doesn't reflect how the process actually works. e. Yellow spots are those that contain no DNA probes on the chip.
Sexual reproduction between male and female ascomycetes requires each strain to develop special hyphae that combine during fertilization. What are the hyphae developed by the female strain called?
a. mycelia b. antheridia c. ascogonia d. gametangia
The most successful animals that have ever
evolved are the
a. chordates. b. insects. c. humans. d. annelids. e. crustaceans
Cheetahs exhibit significant inbreeding and loss of heterozygosity due to overhunting and loss of habitat experienced at some point in their evolutionary history
Which genetic mechanism occurs when a large population is substantially reduced at random, acting independently of natural selection? A) founder effect B) mutation C) gene flow D) Hardy-Weinberg equilibrium E) bottleneck effect