Crop plants modified to be resistant to insect damage produce Bt-toxin from a (bacterial/fungal/synthetic) gene.
Fill in the blank(s) with the appropriate word(s).
bacterial
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Which muscle results in a facial expression of horror and disgust
A) platysma B) risorius C) zygomaticus minor D) zygomaticus major
A student clones a DNA insert into the SalI site of pBR322 . Select all answers that describe the media on which she could expect growth of E. coli containing the recombinant plasmid
A. nutrient agar with ampicillin B. nutrient agar with tetracyline C. nutrient agar with ampicillin and tetracycline D. nutrient agar with streptomycin E. nutrient agar with no antibiotics
If a diploid organism has a genome consisting of four pairs of homologous chromosomes, it can produce ____
different combinations of maternal and paternal chromosomes in gametes (disregarding crossing over). a. 4 b. 8 c. 12 d. 16 e. 32
Which of the following is an important density-independent factor limiting population size?
A) Environmental resistance B) Predation C) Quantity of food D) Weather E) Competition