Which of the following is most like the formation of identical twins?
A) cell cloning
B) therapeutic cloning
C) use of adult stem cells
D) organismal cloning
D
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The two scientists credited with the formulation of the cell theory (cell doctrine) from the 1800s are
A. Watson and Crick. B. Schleiden and Schwann. C. Schleiden and Hooke. D. Schwann and Jenner. E. Ben and Jerry.
An increase in air temperature will result in ____ water vapor in the atmosphere because warm air holds ____ water
vapor than cold air does.
a. more; less b. more; more c. less; less d. less; more e. no change in; less
When young male white-crowned sparrows first begin to sing, they match their vocal output to ____
a. any birdsong they hear during their initial days of singing b. an instinctive blueprint of their species' song c. the memory of their species' song heard months earlier d. the memory of whatever song they heard during an early critical period e. the songs of male relatives heard during their initial days of singing
What is NOT a plant hormone?
a) Auxin b) Ethylene c) Gibberellic acid d) Secretin e) Brassinosteroid