In Drosophila, flies that are XXY but have a normal diploid set of autosomes have been found. Such XXY chromosome constitutions have also been found in humans. The sex of such individuals is expected to be:
A. female in both Drosophila and humans.
B. male in Drosophila but female in humans.
C. male in both Drosophila and humans.
D. intersexes in Drosophila and males in humans.
E. female in Drosophila but male in humans.
Ans: E. female in Drosophila but male in humans.
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In the citric acid cycle, some intermediates are used in other metabolic reactions. Which of the following adaptations would need to be made by a cell in response to this?
A. Some oxaloacetate would need to be produced through an alternative pathway to combine with acetyl CoA. B. Some citrate would need to be produced through an alternative pathway to combine with acetyl CoA. C. Cells would have to use energy sources other than glucose for metabolism. D. The citric acid cycle would eventually shut down when it ran out of intermediates and the cell would switch to glycolysis.
Two-thirds of the plasma proteins are
a. chitin. b. keratin. c. elastin. d. albumin. e. glycoproteins.
How is bacterial DNA packaged?
A) in a lattice along the capsule's inner wall B) in the nucleus as a chromosome C) at the center of the cell in a chromosome D) in dozens of small fragment at the center of the cell
After many years of testing, an hypothesis becomes accepted as a
a. problem. b. theory. c. conclusion. d. variable. e. control.