5 results found.
... Science Frontiers ONLINE No. 36: Nov-Dec 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Evolution Of Man And Malaria Malarial parasites are customarily classified according to the species infected and then further subdivided by morphology and biological characteristics. The two assumptions implicit in this classification procedure, which is supposed to mirror actual historical evolution, are: Malarial parasites evolved in parallel with their hosts; and Morphology is a measure of evolutionary relatedness. With modern biochemical techniques it is possible to test these assumptions by comparing the DNA structures of the different malarial parasites. P. falcipa rum, the parasite transmitting the most deadly human malaria, turns out to be more closely related to rodent and avian malaria than the other primate malarias. Therefore, assumption #1 above is in correct in this view. Assumption #2 is also wrong because some species of malaria parasites which are very similar morphologically are quite different DNAwise. (McCutchan, Thomas F., et al; "Evolutionary Relatedness of Plasmodium Species as Determined by the Structure of DNA," Science, 225:808, 1984.) Comment. The article does not draw attention to still another assumption; namely, that similarities are measures of evolutionary relatedness. If this as sumption isn't correct, evolutionary family trees based on bodily structure, which means most of the family trees in the textbooks, may not truly reflect what really happened in the development of life. Further, if malarial parasites did evolve along with their hosts, hu man evolution seems farther removed from the evolution ...
Terms matched: 1 - Score: 145 - 15 May 2017 - URL: /sf036/sf036p08.htm
... Science Frontiers ONLINE No. 36: Nov-Dec 1984 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Who Mapped Antarctica in Pre-medieval Times? The Mallia Table The Great Wall of the Incas Astronomy Galactic Shell Game Order From Disorder? Biology Four 'Clever' Adaptations Brains Not Hardwired Evolution of Man and Malaria Is A Dog More Like A Lizard Or A Chicken? Geology The Case Against Impact Extinctions Subterranean Electric Currents The Magnetic Jerk Problem Geophysics Spiked Ball Lightning Whirlwind Spirals in Cereal Fields: Quintuplet Formations More Mysterious Hums Psychology Hypnotically Accelerated Burn Wound Healing Mental Control of Allergies Why Most People Are Right-handed Chemistry & Physics Zeta Not A Higgs: Too Bad! ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf036/index.htm
... have demonstrated the above ultraviolet connection by somehow acquiring enough vole urine to lay out artificial trails in voleless areas. Sure enough, hunting kestrels were attracted to the experimental site and searched and searched the artificial vole highways -- volelessly. (Aldous, Peter; "Vole's Urine Is Their Downfall," New Scientist, p. 15, February 4, 1995. Gee, Henry; "In the Eye of the Kestrel," Nature, 373:387, 1995) Comment. Even as you read this, evolution is surely helping the voles by altering the ultraviolet signature of their urine! Sure, this is a bit facetious, but predator-prey relationships are always seesawing. We see this vividly in organisms with very short generation times, such as in antibiotic-resistant malaria. From Science Frontiers #99, MAY-JUN 1995 . 1995-2000 William R. Corliss ...
Terms matched: 1 - Score: 14 - 15 May 2017 - URL: /sf099/sf099b08.htm
... night he fell asleep and in a dream the elements fell into their proper places in the Periodic Table. (Mazzarello, Paolo; "What Dreams May Come?" Nature, 408:523, 2000.) Comments. These mammalian anecdotes involving sleep and dreams are amusing, but most dreams are frivolous, bizarre, and of very little practical value, Mendeleyev notwithstanding. The utility of sleeping and dreaming do not seem at all commensurate with the accompanying vulnerability and the loss of waking hours. However, speculation is fun. There are at least two rather far-fetched explanations for characteristics (sleeping and dreaming here) that do not appear to have very much survival value. Sleeping and dreaming may be linked genetically to a characteristic that does have considerable survival value. Example: Resistance to malaria is coupled to sickle-cell anemia. Sleeping and dreaming may represent unavoidable, intermediate, evolutionary steps toward something of much greater value. Example: those fea- thers on fossil dinosaurs; i.e ., the protobirds. Are sleeping and dreaming humans slouching toward Teilhard de Chardin's Omega Point or possibly A.C . Clarke's Childhood's End? From Science Frontiers #134, MAR-APR 2001 . 2001 William R. Corliss Other Sites of Interest SIS . Catastrophism, archaeoastronomy, ancient history, mythology and astronomy. Lobster . The journal of intelligence and political conspiracy (CIA, FBI, JFK, MI5, NSA, etc) Homeworking.com . Free resource for people thinking about working at home. ABC dating and personals . For people looking ...
Terms matched: 1 - Score: 13 - 15 May 2017 - URL: /sf134/sf134p11.htm
... Demographics of AIDS BHH21 Possible Cofactors in AIDS BHH22 HIV, AIDS, and Gaia BHH23 Apparent Immortality of Cancer Cell BHH24 Subversive and Suicidal Properties of Cancer Cells BHH25 'Insidious" Properties of Cancer Metastases BHH26 Spontaneous Cancer Regressions BHH27 Bodily Potential Differences Correlated with Cancerous or Precancerous Conditions BHH28 Cancer Correlated with Date of Birth BHH29 Cancer Incidence Correlated with Appendix Removal BHH30 Cancer Remissions and Cures Correlated with Severe Infections BHH31 Anomalous Effect of Radon Exposure on Lung-Cancer Incidence BHH32 Father's Radiation Exposure Increases Cancer Incidence in His Children BHH33 Atavistic Nature of Cancer BHH34 The Ubiquity of Proto-Oncogenes BHH35 Cancer Incidence Correlated with Organism Complexity BHH36 Survival of Human Genetic Diseases Despite Natural Selection BHH37 Survival of Human Viral and Bacterial Diseases Puzzle of Human Motion Sickness Origin and Increase of Asthma Efficiacy of Homeopathy Pregnancy Increases Susceptibility to Malaria Cancer and the Extracellular Matrix Autism Correlated with Season of Birth Electrical Shocks Cure Snake Bites Organ Transplants Transfer Allergies SID Correlated with Geomagnetic Activity Advantages of Blood-Letting Efficacy of Acupuncture Heath Correlated with Psychological Disturbances AIDS Associated with Black Plague Survival Geography of Stroke Incidence Longevity Anticorrelated with Reproductive Success AIDS May be Man-Made BHI INTERNAL SYSTEMS AND STRUCTURES BHI1 High Complexity and Sophistication of the Immune System BHI2 The Origin of Antibody Diversity BHI3 Immune-System Deficiencies BHI4 The Enigma of the Fetal Graft BHI5 The Relationship between the Immune System and the Brain BHI6 Phantom Limbs BHI7 The Puzzles of Pain BHI8 Differences between the Aorta Arch in Humans and Other Animals BHI9 The Varying Origin of Embryonic Arms BHI10 Humans and Embryonic and Juvenile Apes: Skeletal Similarities BHI11 The Inheritance of Acquired Skeletal Characters BHI12 Bone-Shedders BHI13 ...
Terms matched: 1 - Score: 6 - 15 May 2017 - URL: /cat-biol.htm
