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
Dizygotic twins are no more or less genetically similar than are other pairs of ____________________.Fill in the blank(s) with the appropriate word(s)
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
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