Which structure do the collecting ducts empty directly into?
A. Kidney
B. Renal pelvis
C. Urethra
D. Urinary bladder
E. Ureters
Answer: B. Renal pelvis
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Sickle-cell anemia is a human disease that occurs as a result of what type of mutation in the b-globin gene?
A. silent B. missense C. nonsense D. frameshift E. sense
Which of the following is NOT a feature of
trypanosomes? a. anaerobic respiration b. single, large mitochondrion c. cause widespread and serious infections of humans and cattle in the tropics d. life cycle involves an intermediate, bloodsucking insect host e. causative agents of Chagas disease and African sleeping sickness
A condition in which both copies of a chromosome are inherited from one parent is called ____________________.Fill in the blank(s) with the appropriate word(s)
In epistasis
a. the phenotype does not change from generation to generation. b. one gene affects the expression of another. c. a portion of a chromosome is deleted. d. a portion of a chromosome is inverted. e. the behavior of two genes is entirely independent.