Which of the technologies listed below is a valuable method for mass-producing drugs and other useful proteins?
A. recombinant DNA technology
B. transgenic technology
C. biotechnology
D. gene targeting
Ans: A. recombinant DNA technology
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Plants rely on pollinators to reproduce, while pollinators rely on plants to provide nutrients. This is an example of ________.
A. commensalism B. mutualism C. parasitism D. predator-prey
Why does the recombination frequency often lead to an underestimation of the true map distance between linked genes?
What will be an ideal response?
What is the best description of double fertilization in angiosperms?
A. One pollen grain fertilizes the embryo sac; the other sperm fertilizes the pollen grain. B. One sperm fertilizes the egg, which develops into the embryo; the other sperm fertilizes the polar nuclei, which forms the seed coat. C. One sperm fertilizes the egg, which develops into the embryo; the other sperm produces the pollen tube. D. One sperm fertilizes the egg, which develops into the embryo; the other sperm fertilizes the ovary, which becomes the fruit. E. One sperm fertilizes the egg, which develops into the embryo; the other sperm fertilizes the polar nuclei, which forms the endosperm.
What is the phase in the bacterial growth curve where the cells are adjusting to a new environment and not yet dividing
What will be an ideal response?