Which of the following is NOT a characteristic
of the arctic tundra?
a. a perpetually waterlogged soil
b. rapid nutrient recycling
c. one of the world's greatest store of carbon
d. permafrost
e. cool, anaerobic conditions
B
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Signal molecules that determine relative positions during development are known as
A. inductors. B. organizers. C. cadherin domains. D. derepressers. E. morphogens.
The temperature range that provides good organismal performance is the same from one species to
another.
Indicate whether the statement is true or false.Rosalind Franklin used which techniques to
determine many of the physical characteristics of DNA?
a. scanning electron microscopy b. transmission electron microscopy c. recombinant DNA techniques d. X-ray crystallography e. DNA profiling
Parapodia are characteristic of oligochaetes
____________________ Indicate whether the statement is true or false.