Which of the following organisms has a ZZ-ZW method of sex determination?
A) House mice
B) Monarch butterflies
C) Fruit flies
D) Humans
E) Worms
B
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The landing platform for pollen in flowering plants is the ____
a. filament b. stigma c. anther d. style e. ovary
Provide an example of gene redundancy that occurs in both eukaryotes and prokaryotes
What will be an ideal response?
For the process of diffusion to occur, molecules must
A. move from areas of low concentration to areas of higher concentration until an equilibrium is reached. B. move from areas of high concentration to areas of lesser concentration until an equilibrium is reached. C. remain stationary until their molecular motion allows for an equilibrium to be reached. D. move from areas of high concentration to areas of lesser concentration until an equilibrium is reached by active transport. E. move from areas of high concentration to areas of lesser concentration until facilitated transport can assist the molecular equilibrium.
The main form of glucose repression in the lac operon is
A. repression. B. the CAP/cAMP system. C. induction. D. inducer exclusion.