A group of scientists that are studying the spread of Lyme disease suspect that it is spreading north due to movement of the tick vector brought about by climate change. What application(s) below would assist with this study?
A. Geographic information systems
B. Remote sensing and geographic information systems
C. DNA microarrays
D. Remote sensing
E. DNA fingerprinting
Answer: B
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The change from indirect development to direct development in sea urchins illustrates the following concepts: (choose all that apply)
_____ Differences in gene expression patterns can cause major changes in development. _____ An organism can arrive at the same adult body plan in different ways. _____ Changing the mode of development requires evolving a lot of new genes. _____ Urchins have a unique genome that is especially suited to major developmental changes. _____ Once a lineage evolves a mode of development, it becomes “locked in”. _____ Radially symmetric organisms are subject to different evolutionary pressures than bilateral organisms. _____ Chromosomal deletions have major effects on development.
Which of the following are white blood cells that are capable of engulfing other cells and particles?
a. pathogens b. eosinophils c. phagocytes d. erythrocytes
Vasoconstriction is a term that refers to the contraction of muscle in the walls of the blood vessels, thus causing the diameter of the blood vessel to decrease. Which one of the following types of muscle would be involved in this contraction?
A) skeletal B) smooth C) cardiac D) both cardiac and smooth E) both skeletal and smooth
All rain forests are tropical.
Answer the following statement true (T) or false (F)