Alternate forms of the same gene are known as _____
Fill in the blank(s) with the appropriate word(s).
Alleles
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A particular flower can be purple, blue, red, or white. A pure-breeding red plant is crossed with a pure-breeding white one, and the F1 are then crossed to produce an F2 generation. Which of the following phenotypic ratios in the F2 indicate that flower color in these plants is controlled by two genes?
A) 2:1 B) 3:1 C) 1:2:1 D) 9:3:4
The binding of a positive allosteric regulator molecule will ________.
A. decrease the ability of the substrate to bind to the catalytic site B. increase the ability of the substrate to bind to the catalytic site C. increase the ability of the substrate to bind to the allosteric site D. decrease the ability of the substrate to bind to the allosteric site
In most cases, pathogens leave the host via the portal of exit through:
a. sloughing b. adhesion c. discharge d. secretion e. diffusion f. filtration g. excretion
Industrial smog would be the result of which of the following?
a. burning fossil fuels b. particulates in the air c. a thermal inversion d. industrial smokestacks e. all of these