In one sentence, explain how it is possible for genetically identical plant cells to become quite different
from each other. What will be an ideal response?
In the process of differential gene expression, genetically identical cells can have different genes being
activated while others are inactivated, resulting in those cells becoming structurally and functionally
different.
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Describe why many systematists adopt the principle of parsimony
What will be an ideal response?
Local cave explorers, returning from a recent expedition, reported discovering piles of dead bats with white froth around their mouths that they believed to be indicative of an outbreak of rabies. Subsequent testing revealed the ‘”froth” was actually a fungus, and the bats were in fact afflicted with white-nose syndrome. What species of fungus causes white-nose syndrome?
a. Histoplasma capsulatum b. Batrachochytrium dentrobatidis c. Pseudogymnoascus destructans d. Botrytis cinerea
Lichens, a combination of fungi and certain algae, live together in a close community interaction. The traditional understanding of lichen is one where the algae produces food for the fungi and the fungi supply the algae with a suitable home. Recently, however, it was found that the algae can live just fine on their own and are also found living "alone" in nature. The fungi on the other hand do
not appear to live on their own in the "wild." Which type of interaction characterizes the "traditional" understanding of lichen? Why? Which type of interaction does the new research suggest? Why? What will be an ideal response?
The term "adenocarcinoma" refers to cancer cells of what origin?
a) muscle b) blood c) glands d) bone