Word: jenningses
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Sex among the Animalcules. Less than 1/125th of an inch long and shaped like the sole of a lady's slipper, Paramecium bursaria or the slipper animalcule is a comparatively large member of the class Infusoria-a family of hairy, one-celled animals that swarm in lily ponds, goldfish...
Like amoebae and other one-celled protozoans, Dr. Jennings' creatures swallow and digest food, expel waste matter, multiply by the simple process of dividing themselves in two. But, unlike the amoeba, they also enjoy sexual relations. They mate by joining and exchanging nuclei.
Through careful observation of more than 10,000 "clones" (detached families) of paramecia, conducted with Winchellian zest and godlike detachment, Dr. Jennings has concluded that paramecia's mating is dependent on sex and that their choice of a mate has important bearing on the character of their descendants. "They...
The length of these life cycles, Dr. Jennings has discovered, are determined by both environmental and hereditary conditions. Well-nourished clones become sexually mature in two or three months, while those on starvation diets take 14 months or more to reach puberty. They then produce weak offspring, or none at...
Dr. Jennings' experiments in infinitesimal incest have yielded valuable hints on the effects of human inbreeding. Last summer they also led the scientist to a surprising discovery. In his efforts to mate various cells of one variety of paramecium, he discovered evidence that the paramecia are divided into no...