A woman has six fingers, but one of her parents has five fingers. She marries a man who has
five fingers. Which of the following represents gametes that could be produced by the
woman?
a. Ff
b. f
c. F
d. both F and f
D
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In DNA, a purine must always pair with a pyrimidine and vice versa in order to ensure that
A. the distance between the two phosphodiester backbones remains constant. B. the two strands are antiparallel. C. the distance between one base pair and the next remains constant. D. each base pair is held together by three hydrogen bonds.
Because of its negative charge, there is more _______ in a cell than in the extracellular fluid.
a. potassium (K – ) b. chlorine (Cl – ) c. sodium (Na + ) d. potassium (K +
In the ________ circuit, blood leaving the ________ ultimately delivers oxygen and nutrients to all of the body's tissues and organs
A) pulmonary; lung capillaries B) systemic; vena cava C) pulmonary; myocardium D) systemic; left ventricle
If organisms A, B, and C belong to the same class but to different orders and if organisms C, D, and E belong to the same order but to different families, which of the following pairs of organisms would be expected to show the greatest degree of structural homology?
A) A and D B) B and D C) B and C D) D and E