Word: fatherless
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
Motherless Frogs. Five years ago Physiologist Gregory Goodwin Pincus of Clark University produced fatherless rabbits by removing ova from virgin females, fertilizing the ova with a salt solution, replanting the fertilized eggs in other females to gestate (TIME, April 6, 1936). Last week Dr. Keith Roberts Porter of the Rockefeller Institute announced that he had produced a greater wonder: motherless tadpoles. He removed the nucleus from a frog's egg at the moment of fertilization, but before it could unite with the nucleus of the male sperm. This made the mother's contribution apparently a mere anonymous drop...
Last week Dr. Pincus exhibited a further marvel-a fatherless rabbit, born from an ovum which had never encountered the male fertilizing element at all. This process, called parthenogenesis, occurs naturally among certain insects, has been artificially induced by man in sea urchins and frogs, but never before in a mammal. Dr. Pincus used high temperature, hormone treatments and hypertonic salt solutions* to fertilize the ovum, and his canny microsurgical technique got the egg well started toward normal development in the host mother's reproductive tract...
Normally the male spermatozoon is what determines the sex of the offspring. If the spermatozoon has a male-determining chromosome pattern in its nucleus, the sex will be male; if not, female. Since there was no spermatozoon in the case of the fatherless rabbit, therefore no male-determining pattern, the Pincus rabbit is a female. She seems to be perfectly normal. Mated to an ordinary buck, she produced a normal litter. These bunnies are the first in rabbit history with no maternal grandfather...
...District of Columbia or New York, but his friends swore that his stated reason for replanting his roots in corn country was the true one: to give his daughter Diana, aged 6, a permanent home, permanent friends. If Mr. Hopkins goes on working in Washington, transplanted Diana will be fatherless most of the time as well as motherless...
...slur indeed. Dwyer omitted her name from subsequent confessions, gave the murder motive as robbery. To friendly South Parisians, Barbara and her father, a respectable World War veteran and deacon, were characters almost as touching as Mrs. Jessie Dwyer, a simple nurse who had long struggled to keep her fatherless boy out of debt. But last May, 43-year-old Francis M. Carroll was arrested for incestuous relations with his daughter Barbara. At Thomaston, Paul Dwyer once more began to talk...