value

Stalk

...on concentration equal to -log [H+] and ranging in value from 0 to 14. Full article >>> stipe . A stalk . stolon . A trailing aboveground stem or shoot , often rooting at the nodes and forming new plant s. Full article >>> sporangiophore -- A stalk to which sporan...

Scale

...on concentration equal to -log [H+] and ranging in value from 0 to 14. phage ... Full article >>> Phi scale . Scale used for measuring the grain size of sediments. = -log2 (grain diameter) Photic zone. The depth zone in the ocean extending from the surface to that depth permitting phot...

Random mating

...l article >>> ) with the expected Fe value based on the number of alleles in the locus of interest, neutrality expectations and random mating assumption. A test of comparison yields an F value. Full article >>> A mating system in which mating s are governed entirely by...

Population

... population that moves from a very low fitness value to the top of a peak Enlarge ... Full article >>> The organ isms in a plant population and the biotic and abiotic factors which impact on them. Ecosystems can be narrowly defined or broadly defined (e.g. the basin big sagebrush ...

Polymorphisms

... selection . They did this by calculating the Fst value for each polymorphism . Full article >>> Many small regions of DNA that vary among individuals (called polymorphisms ) also were identified during the HGP, mostly single nucleotide polymorphisms (SNPs). Full article >>...

Platelets

...0,000 to 350,000 per microliter (µl). If this value should drop much below 50,000/µl, there is a danger of uncontrolled bleeding. Full article >>> Platelets Platelet numbers are given, as well as information about their size and the range of sizes in the blood. Top Encyclopedia A...

Phosphate ion

...hosphate ion . Full article >>> The value of fluoride (in ionized form, F−) was first recognized as a preventive for dental caries (cavities). This makes sense because fluoride ions are incorporated along with calcium and phosphate ion s in the crystalline structure of which ... Fu...

Phage

... defence strategy further we are investigating the value of directed evolution to improve the character istics of protease inhibitors. We describe the approaches of DNA shuffling and phage display that are being used to create and ... Full article >>>...

Petiole

...e stalk connecting the leaf to a stem . pH. A value used to express relative acidity or alkalinity. phenoxy herbicides. A group of herbicides derived from phenoxy-acetic acid, including 2,4-D, 2,4,5-T, 2,4-DB, MCPA and silvex. Full article >>> petiole the stalk of a leaf , which...

Pathogenic

... Environment al impact quotient (EIQ): A relative value that estimates the environment al impact of a pesticide, by taking into account toxicity to natural enemies, wildlife, and human s, degree of exposure, ... Full article >>> Certain pathogenic RNA s, such as viroids and some satel...

Ocular

...d an ocular lens ) we multiply the 10X ocular value by the value of the objective lens (say it is 4X): 10 X 4=40, or 40X magnification. Full article >>&...

Message

...ew ways to provide higher quality products, higher value products in some case, but also to provide a better bargain, if you will, to the end user, ... Full article >>> Apoptotic message s from inside the cell (intrinsic inducer s) are a response to stress, such as nutrient deprivation o...

Memory

...as identified as a trans membrane domain if its value was positive. Full article >>>...

Median

median the middle value of a group of numbers arranged in order of size Source: Jenkins, John B. 1990. Human Genetics , 2nd Edition. New York: Harper & Row ... Full article >>> If there is an even number of values, then median is the average of the...

Map Unit

... distance between the h and r loci is assigned a value of 8 map unit s or ... Full article >>>...

Mantle

...g withheld implies that it may have some probative value to the insurance company and begins to dis mantle the shield of intended protection to the patient. Full article >>>...

Leaf

...minimum element in its right subtree, and move its value into the node being deleted (as shown here). Full article >>> the angle formed by a leaf or petiole with the upward internode of a stem Source: Noland, George B. 1983. General Biology , 11th Edition. St. Louis, MO. C. V. Mosby...

Interchange

...ty annotation system for the human genome , the value of a standardized format for the interchange of annotations is immeasurable. Several suitable formats are under development. Full article >>> The rescue effect definitely adds complexity to the system, but it's very illustrative, in ...

Inbreeding coefficient

...m Hardy-Weinberg equilibrium . where the expected value from Hardy-Weinberg equilibrium is given by ... Full article >>> In a long career, he invented much of the theory of genetic drift (also known as the "Sewall Wright effect") and developed the inbreeding coefficient and many o...

Heritability

...rait in the offspring compared with the average value of that trait in their parents. Full article >>> heritability (in the narrow sense )A measure of the extent to which genes inherited from parents determine phenotype s; defined as the ratio of the additive genetic variance to t...

Genetic engineering

...fer of genes between species . This increases the value of wild strain s which can be used as sources for new trait s to be introduced into crops. Full article >>>...

Forebrain

...icle >>> It would be of - tremendous value to be able to search for all genes known to be express ed only in the liver or in the forebrain or in early gestation, and so on. This kind of data can be acquired systematically in different ways." ... Full article >>>...

Fitness

...ry . Full article >>> SYN: adaptive value , relative Darwinian fitness The relative repr... >>> Fitness Also called adaptive value . The relative reproductive success of a genotype as measured by survival , fecundity or other ...

Express

...mosphere ... Full article >>> pH. A value used to express relative acidity or alkalinity. phenoxy herbicides. A group of herbicides derived from phenoxy-acetic acid, including 2,4-D, 2,4,5-T, 2,4-DB, MCPA and silvex. Full article >>> A normal gene that when mutated or impr...

Environment

... Environment al impact quotient (EIQ): A relative value that estimates the environment al impact of a pes...>> Now in a different environment , the value of the mutation producing resistance to infection by a virus might have a totally different valu...

Elements

...is for heat of formation tables and are assigned a value of zero. See table 12-2. Qmv = 142.08 + 0.572(10) = 147.8 kcal/mol ... Full article >>> Repeat elements , or junk DNA , in the human genome come in four varieties: the "extinct" type ( DNA transposon s), the near-extinct type (...

Depolarization

...y , depolarization is a decrease in the absolute value of a cell 's membrane potential. Thus, changes in membrane voltage in which the membrane potential becomes less positive or less negative are both depolarization s. Full article >>> Depolarization In biology , depolarization ref...

Darwinian fitness

... ... Full article >>> SYN: adaptive value , relative Darwinian fitness The relative reproductive success of a genotype as measured by survival ; fecundity or other life history parameters. See Darwinian fitness and natural selection . Full article >>>...

Adaptive value

adaptive value Degree to which a character istic helps an orga...age. Full article >>> SYN: adaptive value , relative Darwinian fitness The relative reproductive success of a genotype as measured by sur...