Dominant genes are always expressed phenotypically?
a. true
b. false
Answer: a. true
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Activated Ras ____
a. activates MAP kinase (MAP K) b. opens a calcium channel c. triggers gene transcription d. binds DNA e. triggers the secretion of growth factors
Which of the following most accurately
describes mitosis?
a. doubling of cellular material b. DNA replication c. separation of membrane-bound organelles during cell division d. separation of chromosomes during nuclear division e. cell division
Dizygotic twins are no more or less genetically similar than are other pairs of ____________________.Fill in the blank(s) with the appropriate word(s)
The diagram shows the rate of diffusion into a cell using carrier proteins. 
McGraw-Hill EducationCarrier proteins are saturated at which point?
A. 1 B. 2 C. 3 D. 4