Word: miceli
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Dates: during 1940-1949
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Returning to Broadway (where she was last seen in Of Mice and Men) after almost ten years in England. Not to be confused with Playwright-Former Congresswoman Clare Boothe Luce...
Then Dr. Hall rang the bell. At the terrifying sound, the black mice tended to crouch and "freeze." The brown mice scurried around the tub, 93% of them falling in convulsions. Nearly all of the ones with convulsions died. Nearly all the strong-nerved black mice survived the bell...
Next Step. Smiling happily at the success of this experiment, Dr. Hall proceeded to the next. Some of his brown mice, still untested, had unusual ancestry. They were descended from fertilized ova transplanted from a female brown mouse into the womb of a black one. All the "genes" in their cells were of brown-mouse origin. Only the nourishment materials which formed their infant bodies came from their foster mother...
...Hall put these prenatal stepchildren into his tub and gave them the bell treatment. All had convulsions; two-thirds died. None behaved like noise-resistant black mice. This indicated, said Dr. Hall, that the tendency to die of audiogenic seizures is hereditary, carried by a gene in the germ plasm...
Final problem: Was this gene a "dominant" or a "recessive?" To find out, Dr. Hall mated brown mice with black mice. When their hybrid offspring were tried in the tub, nearly all died in convulsions at the sound of the fatal bell. This proved (according to Mendel's law of heredity) that the jittery gene was dominant. A recessive gene would not have expressed itself until the next generation...