Bacillus thuringiensis israeliensis (Bti) produces a protein that causes the destruction of the lining of the gut of insects that eat it and is therefore 

A. a natural insecticide.
B. a GM organism.
C. the result of somatic cell transfer.
D. all the above are true.


A. a natural insecticide.

Biology & Microbiology

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A triploid plant is usually ____ because chromosomes cannot segregate properly during ____

a. not viable; mitosis b. sterile; meiosis c. sterile; mitosis d. not viable; meiosis e. not viable; spore formation

Biology & Microbiology

The division of the lateral meristem

a. results in the production of primary tissue. b. causes an increase in the length of roots. c. produces floral tissue. d. gives rise to the epidermis. e. increases the diameter of roots and stems.

Biology & Microbiology

Which of the following is part of the lateral

meristem? a. cork cambium b. procambium c. protoderm d. ground meristem e. all of these

Biology & Microbiology

Which model would predict that populations diverge from one another through the slow accumulation of adaptive

changes within each population? a. punctuated equilibrium b. paedomorphosis c. hybridization d. allopolyploidy e. gradualism

Biology & Microbiology