Which of the following would best describe the results seen in a flower whose sectors have different pigmentation?
A. the result of a germ-line mutation
B. the result of the plant being triploid
C. the result of the plant being tetraploid
D. the result of transposable elements
E. the result of a deletion
D
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In a bacterial cell, the three genes of the lactose operon are
A) expressed continuously. B) expressed when lactose synthesis is required. C) expressed only in the presence of lactose. D) never expressed, because they are pseudogenes.
Every cell is descended from another cell. This idea is part of _____
a. evolution b. the theory of heredity c. the cell theory d. cell biology
Which of the following organisms would be most likely to present evidence of self-thinning?
A) frogs B) barnacles C) lions D) birds
The end products of glycolysis include
A) NADH. B) acetyl CoA. C) citric acid. D) O2.