Flowering is triggered by the production of _________, which triggers the transition of apical meristem to floral meristem

A. meristemogen
B. florigen
C. auxin
D. gibberellin
E. ethylene


B

Biology & Microbiology

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To detect whether or not a cell has a specific region of a gene, researchers add radioactively labeled DNA molecules that can bind to their complementary DNA sequences. To detect a mutant version of the BLM gene, researchers added the radioactive DNA

molecule 5' - GCTAGCTAAGCCCA - 3' to cells. What DNA sequence were the researchers trying to detect? A) 5? - GCTAGCTAAGCCCA - 3' B) 3? - GCTAGCTAAGCCCA - 5' C) 5? - CGATCGATTCGGGT - 3' D) 3? - CGATCGATTCGGGT - 5'

Biology & Microbiology

The most important kind of selection acting on a well-adapted population in a relatively constant environment is:

A) stabilizing. B) directional. C) catastrophic. D) disruptive.

Biology & Microbiology

The morphological approach to speciation is prone to misinterpretation. Which of the following is not

an example?

a. male birds with strikingly different plumage than females b. a chihuahua and a great dane that do not look alike c. snails that resemble each other, but cannot mate d. snails of quite varied appearance that can all interbreed e. snails of quite similar appearance that are shown to be different species via reproductive isolation

Biology & Microbiology

The ____ protists may cause dysentery after drinking contaminated water

amoeba

a. dinoflagellate

b. apicomplexan c. amoeba d. ciliate e. water mold

Biology & Microbiology