Australopithecines:a
were bipedal.
b. had brains equivalent to those of modern humans.
c. had prehensile tails.
d. knuckle walked.
e. had narrow pelvis
A
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A plant of genotype CCdd is crossed to a plant of genotype ccDD; the F1 offspring are then testcrossed to a ccdd
plant. If the genes are on different chromosomes, what percentage of the offspring will be ccdd?
a. 10 b. 20 c. 25 d. 30 e. 50
Molecular chaperones are proteins that mediate the folding process of:
a. other proteins. b. amino acids. c. lipids. d. DNA. e. sugars.
When the reproductive cells of different species are incompatible and cannot accomplish fertilization, it is referred toas:a
hybrid sterility. b. gametic isolation. c. gametic breakdown. d. temporal isolation. e. behavioral isolation.
leu- bacteria are mixed in a flask with leu+ bacteria, and soon all bacteria are leu+. However, if the leu- cells are on one side of a U-tube, which is divided into two compartments by a filter with fine pores, and the leu+ cells are on the other, the leu- cells do NOT become prototrophic. Which process is likely to produce this observed result?
A. transduction B. transfection C. transformation D. reciprocal translocation E. conjugation