from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Biology Of, relating to, or being the reduction division of meiosis.
- adj. Of a different type or form.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. literally "with a different type". In botanical nomenclature a heterotypic synonym (or taxonomic synonym) is a synonym that comes into being when a taxon is reduced in status ("reduced to synonymy") and becomes part of a different taxon. The zoological equivalent is "subjective synonym".
from The Century Dictionary and Cyclopedia
- Relating to the first nuclear division occurring after mitapsis: so called because it is strikingly different from the ordinary mitoses (nuclear divisions).
Sorry, no etymologies found.
It is evident that what Dr. Wilson means is that the sex-chromosome is unpaired, and that although it divides like the others in the homotypic division, in the heterotypic division it has no mate and so passes with half the number of chromosomes to one pole of the division spindle, while the other group of chromosomes has no sex-chromosome.
Then when the heterotypic division takes place and the number of chromosomes is halved, we shall have two spermatocytes with _N_-1 chromosomes from one of the first spermatocytes and one with _N_ and one with _N_-1 from the other.
Thus each daughter-cell after the first or heterotypic division in normal cases contains 7 chromosomes.
Now when _lata_ is produced it is believed that in the heterotypic division one pair passes into one daughter-cell instead of one chromosome of the pair into each daughter-cell, the other pairs segregating in the usual way.
Region between amino acids 687 and 830 is imporant for translocation of Rols and Loner under heterotypic conditions.
(PDF) , showed stress sensitivities that were generally comparable to the w1118 background controls under these heterotypic stresses
In addition, the activity of the rate limiting enzyme in dopamine synthesis, tyrosine dehydroxylase (TH), is altered under several types of heterotypic stresses in
Here, we report that intranasal administration of purified γ-ray inactivated human influenza A virus preparations (γ-Flu) effectively induces heterotypic and cross-protective immunity.
Given the importance of obtaining improved heterotypic immunity and protection, our novel vaccine concept may overcome the poor efficacy of present influenza vaccines against antigenic variants arising following host range mutations in virulent avian or porcine strains.
One, passive transfer of T cells, but not B cells or serum, from immunised mice protects naïve mice from heterotypic influenza infections.