| DEPT | distortionless enhancement by polarization transfer |
|---|---|
| DOT | date of transfer; Dictionary of Occupational Titles |
| DTF | detector transfer function |
| e | base of natural logarithms, approximately 2.7182818285; egg transfer; ejection; electric charge; ele... |
| ET | educational therapy; effective temperature; ejection time; embryo transfer; endothelin; endotoxin; e... |
| y-suppressed lethal gene | <genetics> In the fruit fly Drosophila, this is a recessive, lethal gene that kills XO flies but not normal XY male flies. (09 Oct 1997) |
|---|---|
| Z gene | The structural gene for beta-galactosidase. (05 Mar 2000) |
| zygotic effect gene | <genetics> A gene whose phenotype is dependent on the genotype of the zygote, rather than the genotype of the mother. See: maternal effect gene. (18 Nov 1997) |
| zygotic lethal gene | <genetics> A mutated or otherwise defective gene at embryonic or larval stages. (06 May 1997) |
| late gene | <genetics, molecular biology> Gene expressed relatively late after infection of a host cell by a virus, usually structural proteins for the viral coat. (18 Nov 1997) |
| functional gene test | Test for a specific protein iwhich indicates that the corresponding gene is not only present but active. (12 Dec 1998) |
| lethal gene | A gene that produces a genotype that leads to death of the organism before reproduction is possible or that precludes reproduction; for a recessive gene the homozygous or hemizygous state is lethal. (05 Mar 2000) |
| fushi tarazu gene | <molecular biology> A gene found in the fruit fly Drosophila melanogaster. Normal fruit fly embryos look like a series of stacked discs, which are called segments. Each segment eventually develops into specific adult fly structures (wings, antennae, legs, eyes, etc.) Flies which have a mutant form of the ftz gene are missing every other segment. (05 Jan 1998) |
| fusion gene | <molecular biology> A hybrid gene created by joining portions of two different genes (to produce a new protein) or by joining a gene to a different promoter (to alter or regulate gene transcription). (05 Jan 1998) |
| linked gene | <genetics> Genes and / or markers that are so closely associated on the chromosome that they are inherited together in 80% or more of cases. (14 Oct 1997) |
| A-DNA | A form of DNA in which the helix is right-handed and the overall appearance is short and broad. (05 Mar 2000) |
| a-form DNA | <molecular biology> One of several forms that can be assumed by a double helix. A-DNA is stable in dehydrated conditions. This form is less common than the dominant form found under physiological conditions -- beta-DNA. This form is also assumed by DNA-RNA hybrid helices and by regions of double-stranded RNA. It is a right-handed helix and is a more compact form than beta-DNA. (09 Oct 1997) |
| antisense DNA | <molecular biology> A synthetic DNA strand that is complementary to a particular strand of target DNA with a complementary sequence of bases. This results in preventing expression of the gene encoded. These proteins can be used to selectively turn off production of certain proteins or block viral genetic instructions, by marking them for destruction by cellular enzymes, in order to prevent the building of new virus or the infection of new cells. (14 Nov 1997) |
| apurinic DNA | <molecular biology> A DNA molecule that has lost adenine and guanine, its purine bases. Apurinic DNA can be produced by treating the DNA with acid. (09 Oct 1997) |
| ATP-dependent DNA strand transferase | <enzyme> From human cell nuclei; catalyses strand exchange between homologous DNA sequences; magnesium dependent, requires ATP hydrolysis Registry number: EC 2.7.7.- Synonym: ATP-dep-DNA-str trnsfase (26 Jun 1999) |