Transcomplementation is a name sometimes given for a test to see whether a gene from one organism can "rescue" a loss-of-function mutant of a different organism with a homologous gene. To which of the following processes might this term apply?
A) replacement of a nonfunctional globin gene with a globin pseudogene
B) substitution of a drought-resistant gene from potato plants with a drought-resistant gene from a cactus species
C) introduction of a human WEE1 gene into a yeast culture with wee1- mutants
D) replacement of a cdc25– with a cdc13+ gene to rescue a cell cycle dysfunction
E) use of Drosophila heat shock gene promoters to regulate heat shock genes in fugu
C
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The use of arsenic compound Salvarsan as a treatment for syphilis is credited to
A. Ehrlich. B. Waksman. C. Chain. D. Fleming.
Portuguese water dogs have evolved to spend a lot of time in water and thus have webbed
feet. What process does not occur in these dogs but does occur in other dogs that do not have webbed feet?
a. apoptosis b. mitosis c. cell differentiation d. signaling pathways
What is the time from the final frost in the spring to the first frost in the fall?
A) transpiration B) hardiness C) a growing season D) translocation
Farmers spray seedless grape plants with synthetic __________, which increases the size of the resulting fruit.
Fill in the blank(s) with the appropriate word(s).