Transplanting embryonic eye tissue into the back of a developing tadpole will cause a lens to grow on the back of the tadpole. This is an example of
A) metamorphosis.
B) cleavage.
C) induction.
D) programmed cell death.
E) gastrulation.
C
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Which of the following is NOT an autoimmune disease?
a. type I diabetes b. rheumatoid arthritis c. hepatitis d. lupus e. multiple sclerosis
Only in judging human behaviors does the concept of
__________ supplant adaptation. a. self-sacrifice b. altruism c. judgment d. morality e. indirect selection
It's the ninth inning, and the bases are loaded. As the pitcher winds up to throw the ball, how does each tissue in his arm contribute to this critical pitch? The ________ of his fingers grips the ball. His ________ sends instructions that trigger his ________ to contract. His ________ provides stability and transmits the force produced.
A. epithelium; ectoderm; mesoderm; endoderm B. ectoderm; ectoderm; mesoderm; endoderm C. connective tissue; nerve tissue; muscle tissue; epithelial tissue D. epithelial tissue; nerve tissue; muscle tissue; connective tissue
In eukaryotes, which topoisomerases can relax negative supercoiling?
A. topoisomerase I B. topoisomerase II? C. topoisomerase II? D. type II topoisomerases only E. All these topoisomerases can relax negative supercoiling.