When counting colonies during viable cell counts, the results are expressed as ________ ________ ________ because it is impossible to determine that each colony arose from a single cell.
Fill in the blank(s) with the appropriate word(s).
colony forming units
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Which of the following relationships is INCORRECT?
A. Maternal effect genes activate gap genes. B. Gap genes activate pair-rule genes. C. Pair-rule genes activate segment polarity genes. D. These relationships are all correct. E. Segment polarity genes activate pair-rule genes.
Growth from apical meristems, generally resulting in an increase in the length of a plant, is referred to
as
a. horizontal growth. b. typical growth. c. secondary growth. d. longitudinal growth. e. primary growth.
The genetic model of colon cancer states that development of colo-rectal cancer requires only one key
mutation. Indicate whether the statement is true or false.
The flattened or scale-like cells that make up certain epithelial tissues are known as ________ cells
Fill in the blank(s) with correct word