In animals, all of the following are associated with embryonic development except
A. Migration of cells to specific areas
B. formation of germ layers
C. Activation of all the genes in each cell
D. Inductive tissue interactions
E. cell division at a relatively rapid rate
Ans: C. Activation of all the genes in each cell
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Summarize the concerns related to the use of transgenic crops
What will be an ideal response?
Standard Precautions include:
a. using barrier devices to prevent exposure to skin and mucous membranes. b. recapping needles by hand. c. storing drinks but not food in laboratory refrigerators. d. discarding sharps in plastic biohazard bags.
What is the success rate for producing live
births of cloned animals?
a. 1-2 % b. 3-5% c. 10-15% d. 40-50% e. 100%
Macromolecules that are used by most organisms to store hereditary information are called:
A. transfer RNA molecules. B. proteins. C. messenger RNA molecules. D. DNA molecules. E. ribosomal RNA molecules.