Cell & molecular biology.Steroid shocker shock·er n. One that startles, shocks, or horrifies, as a sensational story or novel. Noun 1. shocker - a shockingly bad person bad person - a person who does harm to others 2. Invertebrates have proteins that respond to estrogen and other steroids, indicating that this hormonal system evolved earlier than previous data had indicated (164: 180). Finding phages Microbiologists discovered that bacteriophages, the viruses that invade bacteria, have incredible genetic diversity and abound in oceans and soils (164: 26 *). Cell conversion Controversial studies suggested that cells in bone marrow or the blood can become a diverse array of cells, including those of the brain or liver (163: 54, 131 *). Cells grown from mouse embryos can transform into eggs or almost any other kind of cell (163: 349). Khan's legacy A genetic survey indicated that about 1 in every 12 men in Asia and 1 in 200 worldwide, harbors a form of the Y chromosome Y chromosome, n a sex chromosome that in humans and many other species is present only in the male, appearing singly in the normal male. It is carried as a sex determinant by one half of the male gametes. None of the female gametes contain a Y chromosome. tied to Genghis Khan Genghis Khan: see Jenghiz Khan. Genghis Khan or Chinggis Khan orig. Temüjin (born 1162, near Lake Baikal, Mongolia—died Aug. or the men of his armies (163: 91). Sperm science Studies suggested that animal sperm follow temperature gradients and odors as they seek eggs (163: 69, 195) and that sperm quality deteriorates as men age (163: 222). Blood work Platelets, generally considered simple clotting agents, were found to guide an animal's complex immune responses (164: 54). Fashion bug A controversial study of the genetics of different lice forms indicated that people first wore clothing about 72,000 years ago (164: 118 *). Dog DNA DNA: see nucleic acid. DNA or deoxyribonucleic acid One of two types of nucleic acid (the other is RNA); a complex organic compound found in all living cells and many viruses. It is the chemical substance of genes. Geneticists This is a list of people who have made notable contributions to genetics. The growth and development of genetics represents the work of many people. This list of geneticists is therefore by no means complete. Contributors of great distinction to genetics are not yet on the list. deciphered much of a poodle's DNA sequence DNA sequence Genetics The precise order of bases–A,T,G,C–in a segment of DNA, gene, chromosome, or an entire genome. See Base pair, Base sequence analysis, Chromosome, Gene, Genome. , enabling scientists to compare it with human and mouse DNA (164: 197 *). Eye-opening debate While genetic studies revealed that the sense of smell declined in primates as they evolved better color vision Color vision The ability to discriminate light on the basis of wavelength composition. It is found in humans, in other primates, and in certain species of birds, fishes, reptiles, and insects. , scientists continued to debate whether primates originally depended on that vision for spotting red leaves or ripe fruit against a leafy green background (164: 234). Hear here Scientists showed that it's possible to regrow Re`grow´ v. i. & t. 1. To grow again. The snail had power to regrow them all [horns, tongue, etc.] - A. B. Buckley. Verb 1. the sound-sensitive cells within the mammalian inner ear (163: 350 *). Right decision Scientists proposed that an electric field inside an embryo tells it whether to place internal organs to the left or right (164: 187). Feline finding The discovery of the gene mutations that produce black cats prompted discussion of whether the widespread mutations once protected felines from an infection (163: 147 *). Scientists cloned a horse and a mule for the first time, and Dolly the sheep, the first cloned animal, died (163: 141; 164: 83 *). [ILLUSTRATION OMITTED] * An asterisk indicates that the text of the item is available free on SCIENCE NEWS ONLINE (http://sciencenews.org). |
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