The normal microbiota of the lower urethra may show
A. Lactobacillus.
B. Staphylococcus.
C. Corynebacterium.
D. Bacteroides.
E. All of the choices are correct.
E.
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Hereditary retinoblastoma is the result of a(n) ________ in the RB gene of chromosome 13 in both homologues.
A) insertion B) duplication C) inversion D) point mutation E) deletion
Long-day plants flower only when hours of darkness are ________
a. equal to hours of light b. decreasing c. less than a critical value for the species d. greater than a critical value for the species
Which species of Homo is most closely related to the Australopithecines?
A. habilis B. ergaster C. erectus D. sapiens
Which of the following hormones is mismatched with its function?
A. GnRH-stimulates the anterior pituitary B. FSH-stimulates the hypothalamus C. LH-controls the production of testosterone D. Inhibin-blocks GnRH and FSH secretion E. Testosterone-brings about male secondary sexual characteristics