Word: embryos
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...dramatic high point of the book is his meticulously observed birth of a kangaroo in southeastern Australia: it emerges as a pinkish, gleaming blob no longer than the first joint of a man's little finger, and is deposited on the mother's tail. Practically an embryo, the baby must drag itself blindly up through the fur on its mother's stomach and crawl into the marsupial pouch. Throughout, the mother kangaroo remains indifferent to the baby's struggles. This, says Durrell, is "the equivalent of a blind man, with both legs broken, crawling through...
...will appear, namely, the failure to freeze" -that is, somebody might pull the plug on the capsule. Similarly, says Ettinger, theologians might have to revise their concepts of the nature of the soul. There is no agreement, for instance, even as to the time that the soul enters the embryo or leaves the body of the deceased...
...roughly 1000 A.D., speculates Geneticist McKusick, a Rhineland Jew was hit in the gonads by either a cosmic ray or a ray from radioactive rock such as granite. By a billion-to-one chance, the ray damaged one of the genes that govern biochemical development in the embryo's nervous system, leaving a defect that impairs many automatic functions and sensory perception. While the victim's fertility was unimpaired, reasons McKusick, half of his many descendants carried the defective gene with them during a 13th century Jewish migration to Eastern Europe, the area that became the Pale...
...sensitive that it registered the force of a single grain of salt dropped less than one-half of an inch. Then, at the NASA Ames research center in California, Rogallo overheard a cafeteria conversation between two biologists: How could they record the heartbeat of a six-day-old chick embryo without piercing the egg shell...
...grandmother, it would have saved her a great deal of time and expensive equipment in solving the problem of why all quail and poultry eggs hatch out on the same day, nay, the same hour as their siblings [May 27]. It is all very wonderful to know the embryo can "click" prior to hatching, but I am skeptical of the click's effectiveness in communicating the time of emergence. The latter is based entirely on the period of incubation, which is never begun by a smart hen of any of the gallinaceous birds until the entire clutch is laid...