A derived character that is shared by all members of a clade is called a ________ of that clade.
Fill in the blank(s) with the appropriate word(s).
synapomorphy
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Which of the following is true of incomplete penetrance?
A. Environmental factors do not influence penetrance. B. Incomplete penetrance implies that some individuals will experience less severe forms of disease such as cancer or Alzheimer's. C. Gene interactions have been shown to result in incomplete penetrance in some cases. D. Incomplete penetrance refers to cases in which individuals developing a particular disease (e.g., cancer or Alzheimer's) lack the typical genotype for this disease.
What might happen if the insulator between two genes is missing?
A. Without the insulator, neither gene can be transcribed. B. Transcription factors influencing one gene's expression may abnormally influence a neighboring gene's expression C. Transcription factors will not be able to influence the expression of either gene. D. Without insulation, both genes will be expressed at maximal levels. E. Transcription factors will not be able to bind to the insulator.
Velocity
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Folds of the stomach wall are called rugae. Indicate whether the statement is true or false