Atherosclerosis has its most serious effects in the ____
a. extremities
b. coronary arteries
c. pulmonary arteries
d. brain
e. heart muscle cells
ANSWER: b
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In blind cave fish, eyes do not form. However, transplantation of the lens from a closely-related aboveground fish into the optic cup of the cave fish induces eye development. What does this suggest about the loss of vision in the cave fish?
A. Primary induction of the eye fails in the cave fish because the lens lacks some critical signal. B. Secondary induction of the eye fails in the cave fish because the lens lacks some critical signal. C. Primary induction of the eye fails in the cave fish because the optic cup lacks the ability to receive some critical signal. D. Secondary induction of the eye fails in the cave fish because the optic cup lacks the ability to receive some critical signal. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about eye formation? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A process that results in individuals of two populations losing the ability to interbreed is referred to as
a. stabilizing selection. b. fusion. c. speciation. d. differential migration.
Homeotic genes of Drosophila:a
cause cells of the same type to produce differing amounts of gene products. b. specifies the developmental plan for each part of each segment. c. are expressed in only one sex in any particular species. d. when mutated, cause body parts to be duplicated. e. control developmental timing.
Plants produce a polysaccharide made of glucose known as ________, which is virtually indigestible by most animals
Fill in the blank(s) with correct word