Germ-line mutations
A. can be passed to subsequent generations.
B. occur in sex cells.
C. may range from having no effect to completely inactivating protein activity.
D. All of the answer choices are true about germ-line mutations.
E. Only two of the answer choices are true.
Answer: D
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Which of the following best explains why bees aren't attracted to red flowers?
A. Bees perceive red as a warning signal. B. Bees can't see red. C. Red flowers usually are odorless. D. Red flowers do not produce nectar. E. Red flowers are imperfect and do not produce pollen.
If the DNA from a single cell were stretched end to end, how long would it be?
a. 2 nanometers b. 2 micrometers c. 2 millimeters d. 2 centimeters e. 2 meters
Cytotoxic T cell receptors recognize:
What will be an ideal response?
Why doesn't your immune system attack your own cells?
What will be an ideal response?