TASK DEFINITION: In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
PROBLEM:  Prematurely inactivating p42 MAPK in egg extracts resulted in a corresponding hastening of the first mitosis .

SOLUTION: p42 MAPK

PROBLEM:  The biological activity of these mutants was tested by determining their capacity to ( i ) reconstitute RNA polymerase activity in vivo by cotransfection with proteins NP , PB1 , and PA and a virion - like RNA encoding the cat gene into vaccinia virus T7 - infected COS - 1 cells and ( ii ) complete with the wild - type PB2 activity .

SOLUTION: RNA polymerase

PROBLEM:  Four of these fibroblast clones were infected with a retrovirus containing the cDNA encoding myoD and a puromycin selection marker .

SOLUTION:
cDNA encoding myoD