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State whether the following is true or false.
Genes controlling the cell cycle are broadly conserved between yeast and humans.

  • A.True only at large scales
  • B.False only at small scales
  • C.True
  • D.False

Answer: C

Correct answer: True

The conservation is close enough that human cyclin-dependent kinase genes can rescue yeast mutants lacking their own. That is how the machinery was identified: the cdc mutants of budding and fission yeast defined the components, and the human counterparts were then found by complementation - work that earned the 2001 Nobel Prize and that underlies the cell cycle drugs now used in oncology.

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