What is thought to be the maximum temperature for life to exist?
A) 125 °C
B) 150 °C
C) 250 °C
D) 500 °C
Answer: B
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Which of the following does not contain DNA in any cell type?
1.nucleus 2.cytoplasm 3.mitochondrion 4.none of the choices (all may contain DNA)
Which statement accurately characterizes an ethical consideration surrounding human genetics?
a. Nonrelatives are more likely than relatives to carry the same harmful alleles. b. Genetic discrimination is not yet possible, even with all the known effects of genetic information. c. In the current ethical climate, genetic privacy is not a significant concern. d. Consanguineous matings are prohibited by half of U.S. States due to increased risk autosomal recessive alleles. e. Most insurance companies have instituted policies against keeping genetic information on their policy holders.
Scientists developed the ________ model after their studies of the fossil record revealed that some species appear quite suddenly and then remain essentially unchanged phenotypically for a long period of time.
A. Urey-Miller B. Hardy-Weinberg C. gradualistic D. punctuated equilibrium
What is no-till farming?
What will be an ideal response?