When infecting host plants, Glomeromycetes form specialized flat hyphae called ________ that enable penetration and subsequent reproduction within the host.
Fill in the blank(s) with the appropriate word(s).
appressoria
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ALL stratified lakes contain a thermocline
Indicate whether the statement is true or false.
The normal gene for hemoglobin was isolated, cloned, and subjected to restriction enzyme digestion with BamHI. Following gel electrophoresis, three bands are routinely obtained. However, following the same procedure with the hemoglobin gene from an individual with sickle-cell anemia, four bands are routinely obtained. These data suggest that
A) the mutation associated with sickle-cell anemia results in DNA that breaks easily. B) the mutation associated with sickle-cell anemia results in the loss of a BamHI cut site. C) the mutation associated with sickle-cell anemia results in several new enzyme cut sites for a variety of restriction enzymes. D) the mutation associated with sickle-cell anemia results in the gain of a BamHI cut site. E) the assay was not performed correctly.
Meiosis that produces microspores is indicated
by a. A. b. B. c. C. d. D. e. E.
'Bluecomb' septicemia in turkeys and other species of fowl (chickens, ducks, ems, parrots, peacocks, pheasant) is caused by:
A. erysipelothrix rhusiopathiae B. listeria monocytogenes C. neither erys rhus nor listeria monocyt D. both erys and list