Epigenetic inheritance
A. only refers to autosomal genes.
B. only effects female offspring.
C. only effects male offspring.
D. can result in the expression of different alleles in different generations.
E. only refers to X inactivation.
D. can result in the expression of different alleles in different generations.
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All cells have cytoplasm. Which of the following describes cytoplasm?
a. Cytoplasm is a lipid bilayer that surrounds the outside of the cell with amphipathic phospholipids supporting embedded proteins. b. Cytoplasm is a dense region inside the cell that houses the DNA that shows up darker under a microscope. c. Cytoplasm is the jelly-like interior of the cell in which other cellular components are suspended. d. Cytoplasm is a long tail that allows the cell to move through aqueous environments.
What structure is surrounded by the vasa recta in juxtamedullary nephrons?
a. proximal convoluted tubule b. distal convoluted tubule c. loop of Henle d. Bowman’s capsule
The few ancestors of the Galapagos finches who colonized the islands is an example of
A. a bottleneck. B. natural selection. C. increased mutation rate. D. artificial selection. E. founder effect.
What components make up a nucleotide?
A) a sugar and a phosphate group only B) a nitrogenous base and a phosphate group only C) a nitrogenous base and a sugar only D) a sugar, a nitrogenous base, and a phosphate group