What is meant by a genetic shotgun? What will be an ideal response?
Genetic shotguns are devices used to introduce DNA-coated gold particles into plant cells in
the hope that some of the DNA will be incorporated by the cell. This technique is employed
to circumvent difficulties associated with the incorporation of DNA into some commercially
important plants, such as the barrier of the cell wall..
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Which of the following problems during DNA replication is being illustrated with the kids in the video
a. DNA replication only occurs in cancer cells. b. Nucleotides at the ends of the DNA strands are lost when DNA replicates. c. DNA replication is a very random process, and many mistakes are made. d. Within a chromosome, there is more telomerase than there is DNA
What causes the inactivation of a G protein?
A. The alpha subunit hydrolyzes GTP to GDP and inorganic phosphate. B. The beta and gamma subunits trigger the hydrolysis of GTP to GDP. C. A phosphatase removes the inorganic phosphate group from GTP. D. The inactive receptor catalyzes the replacement of GTP by GDP.
The carrying capacity for species 1 is 1000 and for its competitor, species 2, it is 500. What is the maximum abundance of species 1 if 250 of species 2 coexists with it?
A) 250 B) 1000 C) 500 D) 1250
How do barrier methods of birth control prevent conception?
What will be an ideal response?