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...t . Full article >>> Zygotene The term proposed by Gregoire (1907) to describe the nuclei at a particular stage of prophase 1 of meiosis when the homologous chromosomes are associating side by side. (Gk. zygon, yoke; taenia, ribbon.) Pachytene ... Full article >>> 2......he biology of alien organ isms. This use of the term demonstrates the speculative generation of possible models of such life, e.g. silicon-based. Full article >>> Exo biology and xenobiology are terms also found in science fiction, although typically such terms refer to the speculativ......62; chromosome , se x chromosome [ Send this term to a friend ] [ Suggest a term for the glossary ] See Also: ... Full article >>> A fruit fly with an X chromosome :......not be synthesized in the body. vulva A collective term for the external genitals in women. Full article >>> vitamins : organ ic nutrients essential in trace amounts to the health of animals . voluntary muscle : see striated muscle . W ... Full article >>> Vitamins are......not be synthesized in the body. vulva A collective term for the external genitals in women. Full article >>> vitamin [L. vita, life] An organ ic molecule required in the diet in very small amounts; vitamin s serve primarily as coenzymes or parts of coenzymes . Full article >......lex, and has important consequences for the long term evolution of a pathogen . If a disease is rapidly fatal, the host may die before the microbe can get passed along to another host . Full article >>> Some bacteriophages contribute to the virulence of bacteria l infections.......ipt s, partially processed RNA s and snRNA . The term hnRNA is often used just for the unprocessed primary transcript s, however. Full article >>> hnRNA ( heterogeneous nuclear RNA ): Heterogeneous nuclear RNA ; refers collectively to the variety of RNA s found in the nucleus , ......ynonym: tunica serosa . 2) In embryology , the term is used to mean the most exterior extraembryonic membrane. Full article >>> : A clonal hermaphrodite ( Phylum Chordata , Sub phylum Tunica ta , Class Ascidian =sea squirts). It grows fast, reproduces weekly, and thus, a good ......ade. Full article >>> Trisomy The term proposed by Blakeslee (1922) to describe an otherwise diploid individual which has one of the chromosomes represented three times instead of twice. Caused by nondisjunction during cell division . Related Terms: Diploid ... Full article >...... tricuspid valve into the right ventricle . The term tricuspid refers to the three flaps of tissue that make up the valve. Contr action of the ventricle then closes the tricuspid valve and forces open the pulmonary valve. Full article >>> The blood then passes through the tricus...... Full article >>> Transversion The term proposed by Freese ( 1959) for a mutation caused by the substitution of a purine for a pyrimidine , and vice versa, in DNA or RNA . (Cf. Transition .) ... Full article >>> Transversion A base substitution mutation w....... Full article >>> Transition The term proposed by Freese (1959) for a mutation caused by the substitution in DNA or RNA of one purine by the other, and similarly with the pyrimidine s. (Cf. transversion .) Related Terms: Mutation ... Full article >>> Transit......; " Transgenic organ ism" is now the preferred term for genetically modified organ isms with extra- genome information, as opposed to "genetically engineered" organ isms. Applications ... Full article >>> A transgenic construction insert ed in a chromosome which is used to ident......article >>> Transfection A general term to describe the introduction of recombinant or vector DNA into host cells . Transformation Usually refers to passive uptake of DNA by cells , although in nature some bacteria l species have a specific active uptake system. Full arti......>>> Repair of UV damage in the short term occurs preferentially on the trans cribed strand... to stop transcription . Transfection A general term to describe the introduction of recombinant or vector DNA into host cells . Full article &......ranscriptase trans cribes RNA into DNA . The term "retro" in retrovirus refers to this reversal of the Central dogma of molecular biology . Full article >>> The pol-like open reading frame is probably the gene for a reverse transcriptase that trans cribes processed RN......>>> Repair of UV damage in the short term occurs preferentially on the trans cribed strand...o stop transcript ion . Transfection A general term to describe the introduction of recombinant or vector DNA into host cells . Full article &......organ isms for maintenance and growth (we use this term in this book in application to plant s) ... Full article >>> Mitochondria Small organelles in the cell where energy from electron trans port between molecule s is converted into energy for biological activity. Mitochondria ......following favorable growing conditions). Thus each term of growth activity is seen as a ring. Full article >>> secondary xylem Tissue produced by vascular cambium and composed of both tracheids and vessel elements . Covered in Lab 9 Seed Plant Sporophyte ... Full article >......ll article >>> The " Tetrapod s" The term " tetrapod " (meaning four-limbed or four-footed) has historically been applied to the land vertebrates (amphibians, reptiles, dinosaurs, birds, and mammals ). Full article >>> Super class Tetrapod a (four-limbed vertebrates ) C......haploid cell s formed at the end of meiosis . The term was formerly used for the four chromatid s making up a chromosome -pair at the first division of meiosis . Related Terms: Haploid ... Full article >>> Tetrad ana lysis A method for establishing linkage relationships in fu......rticle >>> " Terminator " Genes This term is used (by opponents of the practice) for trans ... to stop transcription . Transfection A general term to describe the introduction of recombinant or vector DNA into host cells . Full article &......e. Full article >>> Taxon General term for a taxon omic group, i.e. species , genus , ...a taxon in a class ification system. Cotypes A term no longer recognized in the International Code of Zoological Nomenclature; synonymous with syntype...... technology transfer . related terms: [ Send this term to a friend ] [ Suggest a term for the glossary ] ... Full article >>> Technology transfer : The process of convert......s . Full article >>> Synapton The term is used in some books as a shortened version of synapton emal complex . Related Terms: Synapton emal complex ... Full article >>> synapton emal complex The structure that holds homologous chromosomes together during synapsis...... >>> A synapomorphy is a technical term that is used when you know that two animals have inherited the same character istic. First, they have the same character istic and you know that they inherited it together. Full article >>> These identifying character istics of a ......cle >>> shallow ecology A critical term applied to superficial environment alists who claim to be green but are quick to compromise and who do little to bring about fundamental change. Full article >>> A phenomenon in which one species benefits by a superficial resemb...Structural change A general term for a deletion , duplication , or inversion of a chromosome segment , or an interchange of segment s which may be between homologous or non- homologous chromosomes . Related Terms: Deletion ... Full article >>> A structura......s. Full article >>> Stringency : A term used to describe the conditions of hybridization . By varying the conditions (especially salt concentration and temperature) a given probe sequence may be allowed to hybrid ize only with its exact complement (high stringency ), ... Full art...... l analog of egg white avidin . Stringency : A term used to describe the conditions of hybridization . Full article >>> Biotin has an extraordinarily high affinity for streptavidin with a reported dissociation constant of ~10-15. This very strong binding affinity has made the biot......a miniature eye.More info? stipe -- A scientific term for " stalk ". Full article >>> Stigma tization of eugenics in the post-Nazi years In the years after the experience of Nazi Germany, ... Full article >>> stigma Part of the female reproductive structure of the car...... article >>> stipe -- A scientific term for " stalk ". stipule s -- Paired appendages found at the base of the leaves of many flower ing plant s. Full article >>> stipe . A stalk . stolon . A trailing aboveground stem or shoot , often rooting at the nodes and fo...... in a sporic life cycle. A spore is a biological term for a reproductive mechanism, usually haploid and unicellular , that is adapted for dispersion and surviving for extended periods of time in unfavorable conditions. Full article >>> SYN: asexual spore (1) In plant s and fungi ......gnant cells . Full article >>> The term introduced by Darlington (1936) for the specialized chromosome region which reacts to the spindle at nuclear division and to which spindle fibers attach during cell division . Appears as a distinct "waist" by microscopy. Full article >......i. Full article >>> Spermatid The term spermatid refers to the haploid male germ cell that results from secondary sperm atocyte division . As a result of meiosis , each spermatid contains only half of the genetic material present in the origin al primary sperm atocyte. Ful......ies of animal which possesses an amnion . This term is most often used in the plural (amniotes) to refer to reptiles, birds, and mammals collectively. Full article >>> A species is the smallest cluster of organ isms that possesses at least one diagnostic character . This characte......ce it assumes sexual reproduction , it leaves the term undefined for a large class of organ isms that reproduce asexual ly. Full article >>> This process is intended to simulate the analogous process of recombination that occurs to chromosomes during sexual reproduction . Full ar......>> serum - whey]. 1) In histology, the term is used to mean a serous membrane such as the peritoneum , pleura , and pericardium . A serous membrane is composed of a layer of epithelium with a thin layer of connective tissue . Synonym: tunica serosa . 2) In ... Full article >>&#...... polymerase chain re action ( PCR ) [ Send this term to a friend ] [ Suggest a term for the glossary ] See Also: ... Full article >>> When a sequencing re action is p...Serosa [L. serum - whey]. 1) In histology, the term is used to mean a serous membrane such as the peritoneum , pleura , and pericardium . A serous membrane is composed of a layer of epithelium with a thin layer of connective tissue . Full article >>> serosa The outer embryo nic m......ll article >>> calyx A collective term for all the sepals of a flower . Covered in Lab 8 Seed Plant Reproduction ... Full article >>> flag - plant s with sword-shaped leaves and erect stalk s bearing bright-colored flower s composed of three petal s and three dro......rticle >>> (The technical use of the term here follows the normal English sense of being able or fit.) Dorsal neural ectoderm in amphibian embryo s consists of competent cells which if induced can form the neural plate . Full article >>> sensory somatic system:...Semi-conservative The term proposed by Delbrck and Stent (1957) to describe the method of replication of DNA postulated by Watson and Crick (1953) in which the molecule divides longitudinally, ... Full article >>> Nucleotide triphosphates (in the forms ......Full article >>> seed plant Common term for gymnosperms and angiosperm s. seed - scale complex The spirally arranged scale s on a female strobilus in gymnosperms . Full article >>> seed plant any plant that bears seeds. Most seed plant s, have flower s and prod......es genetic screen ing. related terms: [ Send this term to a friend ] [ Suggest a term for the glossary ] ... Full article >>> Screening , Genetic Tests, and Counseling Ea......other insects. Full article >>> The term proposed by Koller (1935) to describe the multistranded condition (Gk. polys, many; tania, ribbon) of the chromosomes found in certain specialized tissue s such as the salivary glands of Drosophila . Related Terms: Chromosome ... Full articl...... tricuspid valve into the right ventricle . The term tricuspid refers to the three flaps of tissue that make up the valve. Full article >>> Human heart beats origin ate from the sinoatrial node (SA node) near the right atrium . Modified muscle cells contract, sending a signal ...... tricuspid valve into the right ventricle . The term tricuspid refers to the three flaps of tissue that make up the valve. Contr action of the ventricle then closes the tricuspid valve and forces open the pulmonary valve. Full article >>> atrioventricular (AV) node Tissue in th......A . Full article >>> Ribosome The term proposed by Roberts (1958)for the small cellular components (Gk. soma, body) composed of specialized ribosomal RNA and protein (ribonucleo protein ); site of protein synthesis. Full article >>> Ribosome s are the sites of p......), messenger RNA (m RNA ), protein [ Send this term to a friend ] [ Suggest a term for the glossary ] See Also: ... Full article >>> Ribonucleic acid ( RNA ) is a nu......t attach to a substrate and absorb moisture. The term is also applied to similar structures found outside the bryophytes. Full article >>> rhizoid -- n. A cellular outgrowth of a plant that usually aids in anchoring to the surface and increasing surface area to acquire water or nutrie......transcriptase trans cribes RNA into DNA . The term "retro" in retrovirus refers to this reversal of the Central dogma of molecular biology . Full article >>> The pol-like open reading frame is probably the gene for a reverse transcriptase that trans cribes processed RNA ......u, Sankoff ... Full article >>> The term "retro" in retrovirus refers to this reversal of the Central dogma of molecular biology . Full article >>> Cells undergo immediate calcium de-regulation in the presence of glutamate if the respiratory chain is inhibited; this ......edirected from RFLP ) In molecular biology , the term restriction fragment length polymorphism (or RFLP ) is used in two related contexts: as a character istic of DNA molecule s (arising from their differing nucleotide sequence s) by which they may be ... Full article >>> Res...Restriction site Shortened term for restriction endonuclease recognition sequence . Related Terms: Restriction enzyme ... Full article >>> Restriction site A DNA sequence recognized and cleaved by a restriction endonuclease . Restriction site s are of...Respiration is a term used in both biology and biochemistry : Cellular respiration , the process in which the chemical bonds of energy-rich molecule s such as glucose are converted into energy usable for life processes, ... Full article >>> Respir...Repulsion The term introduced by Punnett and Bateson (1908) for the condition (phase) of a heterozygote for two linked character -differences in which the two dominant factors were derived one from each parent of the individual, ... Full article >>> ...... the operon . Full article >>> The term introduced by Jacob, Perrin, Sanchez and Monod (1960) for the site at one end of an operon where a repressor molecule binds to the DNA and thereby inhibits transcription . Full article >>> OPERATOR - The site on DNA at...Replicon The term proposed by Jacob and Brenner (1963) for a unit of replication of the hereditary material, that is, ... Full article >>> Replicon fusion The integration of one replicon into another to form a single replicon . Full article......article >>> Transfection A general term to describe the introduction of recombinant or vector DNA into host cells . Transformation Usually refers to passive uptake of DNA by cells , although in nature some bacteria l species have a specific active uptake system. Full arti...
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(Date:7/25/2008)...and Industry specialists from 22 countries are sha... species, such as mustard, radish, or rapeseed, t...nown as biofumigation. ," Brassica plants natur...hogens, principally isothiocyanates (ITCs), which ...n mustard or horseradish," says CSIRO,s Dr John Ki...
(Date:7/25/2008)...rned ,green, can potentially contain a naturally o... a risk to public health according to a review pap...Journal of the Science of Food and Agriculture (J...way the ,green, affected area is enough to elimina...per also suggests that the levels of GA in potatoe...
(Date:7/24/2008)... team led by Massachusetts General Hospital (MGH) ...r genomic research and medicine a robust method f...rticular DNA sequences for inactivation or repair....esearchers describe an efficient, publicly availab...ases (ZFNs), which can be used to induce specific ...
(Date:7/24/2008)...e Arctic Circle, scientists have found black smoke...fore. The cluster of five vents one towering near...t as 570 F., Dissolved sulfide minerals that sol...p sea have, over the years, accumulated around the...rothermal sulfide deposits ever found on the seafl...
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(Date:7/25/2008)...consumers tips and encourages them to, ,Speak Up,..., July 25 /PRNewswire-USNewswire/ -- The Pennsylva...nal Patient Safety Day" which,is a national effort...cipate fully in their healthcare by asking questio...rgery or illness., "We understand the important r...
(Date:7/25/2008)...eting Exclusivity Begins -, CORONA, Calif., July ...s, Inc. (NYSE: WPI ), a leading specialty pharmac...ry has commenced commercial,shipment of its Omepra...0mg,strength from its Davie, Florida manufacturing...has 180 days of marketing exclusivity for being th...
(Date:7/25/2008)...lliance to be presented at Fenway Park ...ly 25 /PRNewswire/ -- CVS/pharmacy announced today....4 million in just 21 days,through its annual in-s...s,the seventh year of the annual fundraising effor... for ALS research. This year,s fundraiser took,pla...
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