Which of the following is incorrectly paired?
A) intrauterine insemination; donated sperm is placed in the woman's reproductive tract
B) in vitro fertilization; fertilization occurs in a laboratory dish
C) ICSI; DNA from an immobile sperm is injected into an oocyte
D) GIFT; fertilization occurs in a laboratory dish
D) GIFT; fertilization occurs in a laboratory dish
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The five-year survival rate of ____________________ cancer is only 13%
Fill in the blank(s) with correct word
Which province of the ocean is found above the continental shelf?
a. abyssal b. benthic c. pelagic d. neritic e. oceanic
In general, the pool of materials in living organisms is
a. much greater than the pool found in the physical environment. b. constantly changing over a wide range. c. usually equal to the pool found in the soil. d. about the same as the pool found in the physical environment. e. much less than the pool found in the physical environment.
In the laboratory, fruit flies (Drosophila) were artificially selected for the number of bristles on their bodies. One population (R) was selected for low numbers of bristles, a second population (S) for high numbers of bristles.
After 35 generations (about 1 year's time), the two populations R and S were studied. Researchers found
A. a huge increase in S, a huge decrease in R, with no overlap whatsoever. B. no change was seen; it's much too soon. C. a vast, overlapping range of bristle numbers was seen. D. a slight increase in bristles in S, a slight decrease in R, with a little overlap in the middle ranges. E. some slight increase of bristle numbers was already evident.