Crop plants have been protected from certain insects by the addition of a gene for a specific insect toxin from the bacterium
A. Agrobacterium tumefaciens.
B. Bacillus thuringiensis.
C. tobacco mosaic.
D. Herpes simplex.
E. Pseudomonas.
Answer: B
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Measurement of relative water content (RWC) can be used to predict a:
A. plant's ability to recover from cell collapsing B. wilted condition C. need for fertilizers D. cold shock E. salt tolerance
Whose work with fruit flies presented the first clear evidence that the genes determining Mendelian traits reside on chromosomes?
A. Thomas Hunt Morgan B. Gregor Mendel C. Karl Correns D. Walter Sutton
Sexual selection occurs when a female chooses a male that _____.
A. shares all resources B. is migratory C. provides a gift of prey D. can be a chameleon E. has never had a mate
Which functions earlier in development: maternal-effect genes or zygotic genes?
What will be an ideal response?