When the gene that encodes the histones acetylase (HAT) was isolated, it was shown to have homology to the yeast protein, Gcn5 . Why was this an exciting find?
What will be an ideal response?
Gcn5 is a transcriptional activator that implies that the acetylase activity may account for the activator's regulatory function. Ultimately Gcn5 was shown to have histone acetylase (HAT) activity.
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A scientific theory is:
A. a suggested explanation that accounts for observations. B. a way to organize how we think about a problem. C. a concept that is supported by experimental evidence that explains the facts in an area of study. D. a way to understand a complex system by reducing it to its working parts.
The DNA-histone complex is most analogous
to
a. a pearl necklace. b. a waterproof watch. c. a microwave oven. d. the gears on a bicycle. e. a flashlight
A population of 1,000 individuals with an r = 1 per
individual per year in an unlimited environment will number __________, four years later. a. 1,000 b. 1,004 c. 4,000 d. 16,000 e. 40,000
Elephantiasis is caused by
A) blood flukes. B) liver flukes. C) filarial roundworms. D) tapeworms. E) flatworms.