Word: parentes
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Dates: during 1950-1959
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...thus enable the church to offer help; 2) play costumes are costly and so too are the increasing number of lay teachers needed in growing parochial schools; 3) mission collections teach children to make sacrifices; 4) Mrs. Cronin could help improve her children's textbooks by working with Parent-Teacher Associations; 5) if the play nets enough to pay an additional ?teacher next year, the doubled-up class may be separated-if another classroom is available ("This is a national problem, as you must know"). Concluded Sister Mary: "The Sisters would be jubilant if they discovered that from...
...during the scientific revolution of the early 1900s, but it had a strange, unpublicized start more than 40 years earlier when Gregor Mendel, an Augustinian monk and natural-history teacher in Brünn (now Brno, Czechoslovakia), began experimenting with peas in the monastery garden. Mendel found that the parent plants transmitted their characteristics to their descendants in a predictable, mathematical way. When purebred red-flowered peas, for instance, are crossed with white-flowered ones, all the seeds grow into plants with red flowers. But when these red hybrid plants are crossed with each other, one-fourth of their offspring...
...threadlike bodies in the nuclei of cells. When a cell divides nonsexually, as in a growing plant or animal tissue, the chromosomes replicate (make copies of) themselves. Each daughter cell gets a full set, and unless something has gone wrong, it is exactly like the chromosome set of the parent cell (see diagram...
Many years before the birth of the science of genetics, the chromosomes had been observed behaving in this way, but no one knew why they did. Genetics supplied the answer. Reduction division is a kind of lottery that deals the fertilized egg half a set of chromosomes from each parent, like cards dealt out to players in a two-handed card game. When maternal and paternal chromosomes are slightly different, which is generally the case, their dominant genes (units of heredity) suppress recessive genes, as Mendel's red-flowered peas suppressed white-floweredness. Each recessive gene is still riding...
...Congratulations on your baby. But since you want this baby to have all the time and care you are able to give, you probably prefer not to have another too soon." In the past year, 14,000 pamphlets with these words have been sent to Ohio parents in and around Toledo. The sender: Toledo's Planned Parenthood League. Last December, soon after his tenth child was born, William Kunisch, a Roman Catholic mailman, received such a pamphlet in his own mail, promptly decided that a rebuttal was needed. With the help of his wife and the advice of Father...