Genetic drift is the result of ________
A) natural selection
B) chance
C) a large gene pool
D) environmental variation
B
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After a plant has survived a microbial invasion, the rest of the plant is often less vulnerable to future infections. This is
called ____.
a. systemic acquired resistance b. wound defense c. gene-for-gene recognition d. hypersensitive response e. jasmonate response
Which of the following is capable of enzymatic activity?
a. lipids b. proteins c. carbohydrates d. minerals e. vitamins
Which region of the ? phage genome enables the linear chromosome to circularize when it enters a host cell?
A) cohesive (cos) site B) IS10 C) early operators D) integrase (int) gene E) excisionase (xis) gene
When conducting a scientific experiment, a(n) _____________ is tested.
A) theory B) prediction C) question D) answer E) null variable