The ability of a lens to gather light is referred to as its
A) resolution.
B) numerical aperture.
C) refraction.
D) contrast.
E) magnification.
B
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You are given two populations of true-breeding tomato plants with two traits that sort independently. Using the multiplication rule, how many of the F2 progeny would you expect to have a dominant phenotype for both traits?
A. 9/16 B. 6/16 C. 3/16 D. 1/16
Which of the following is an example of genetic mosaicism?
A) Calico coat color in cats B) Albinism in mice C) Male pattern baldness in humans D) Red-green color blindness in humans E) White eyes in Drosophila
Backpackers' diarrhea, a common infection among campers and hikers, is caused by drinking untreated
water. Consequently, backpacker’s diarrhea is due most likely to __________ in the water. a. Phytophthora b. Amoeba c. Euglena d. Trypanosoma e. Giardia
Boiling an object for a few minutes will make it slightly sterile.
a. true b. false