(n.) Difference of form between members of the same species, as when a plant has two kinds of flowers, both hermaphrodite (as in the partridge berry), or when there are two forms of one or both sexes of the same species of butterfly.
(n.) Crystallization in two independent forms of the same chemical compound, as of calcium carbonate as calcite and aragonite.
Example Sentences:
(1) The sexual dimorphism in hepatic drug metabolism found in Crl:CD-1 mice is due to the normally repressive effects of testicular androgens on the activities of hepatic monooxygenases.
(2) Conclusions on phylogenetic trends of sexual dimorphism of skeletal robusticity and the effect of culture on it seem to be premature.
(3) The MA and BNST in general are involved in regulation of several sexually dimorphic functions, including aggression, sexual behavior, gonadotropin secretion and integration of olfactory information.
(4) In this study the development of the sexually dimorphic DLN was examined to test the hypothesis that early androgen action also determines the sex difference in DLN motoneuron number by regulating normally occurring motoneuron death.
(5) Taken together, the findings show that a prevalent nondeleterious dimorphism exists in the activation peptide of human coagulation factor IX.
(6) The recent demonstration that the expression of the neuropeptide cholecystokinin is activationally regulated by estrogen at the mRNA level, within a sexually dimorphic population of neurons in the medial amygdala, suggests a possible cellular mechanism for the hormonal modulation of olfactory information relayed along the vomeronasal pathway to the hypothalamus.
(7) These findings are discussed with respect to similarities and differences between marsupial and eutherian females and between male and female gray opossums in the hormonal control of sexually dimorphic behavior and morphology.
(8) Analysis proceeded by means of the analysis of covariance with the dental dimorphism indices as the dependent variables.
(9) The purpose of the present study was to identify the existence of sexual dimorphism in the dendritic field of accessory olfactory bulb mitral cells in rats and to investigate the effects of male orchidectomy and female androgenization on the day of birth upon this dendritic field.
(10) Contacts of untreated lepromatous and dimorphous (borderline) leprosy patients are at relatively high risk of disease and should be examined annually for at least 5 years.
(11) This sexual dimorphism in dopamine uptake was present in cultures of tissue removed before the perinatal rise of testosterone occurs in males, and was present even in the absence of hormonal additives to the culture medium.
(12) The sexual dimorphism emerges when a fish reaches about 110 mm total length.
(13) We conclude that intermale competition among platyrrhine species is the most important factor explaining variations in canine dimorphism.
(14) Renal gamma-GTP activity gradually increased in males with maturation, and a sexual dimorphism of renal gamma-GTP was apparent after the fourth week.
(15) These results suggest that prenatal exposure to AVP or caffeine produced sexually dimorphic effects on learning and that the effects are specific to the structure of AVP.
(16) Sexual dimorphism is well marked in both populations and among the Ainu appears to be due largely to clothing habits.
(17) At onset of puberty, the level rises again and exhibits a sexual dimorphism.
(18) The fungicidal activity of terbinafine which has been demonstrated in vitro for several strains of dermatophyte, filamentous and dimorphic fungi, has been demonstrated in vivo in model systems for dermatophytoses.
(19) Two multivariate statistical tests are presented for examining differences in sexual dimorphism between human populations.
(20) The hypothesis that patterns of sexual dimorphism in transverse dimensions of the metacarpal only reflect sex differences in body size was investigated in a sample of 324 Mexican school children 6.00-10.99 years of age.
Polymorphism
Definition:
(n.) Same as Pleomorphism.
(n.) The capability of assuming different forms; the capability of widely varying in form.
(n.) Existence in many forms; the coexistence, in the same locality, of two or more distinct forms independent of sex, not connected by intermediate gradations, but produced from common parents.
Example Sentences:
(1) Structural peculiarities in tubulin polymorphism are considered.
(2) We conclude that only one of the alleles was amplified and that either allele could be amplified with respect to both the SphI and PvuII polymorphisms.
(3) Twelve families with Wiskott-Aldrich syndrome (WAS) were studied by linkage analysis using 10 polymorphic marker loci from the X-chromosome pericentromeric region.
(4) Restriction fragment length polymorphisms (RFLPs) were studied in a large Algerian family which includes 6 haemophiliacs and a previously described case of female haemophilia A.
(5) 247 individuals from Northern Italy have been tested for red cell glutamic-pyruvic transaminase (GPT) polymorphism.
(6) An N-acetylation polymorphism is described that is expressed toward arylamine carcinogens in tumor target organs of an inbred rat model.
(7) These killer cells could lyse a wide range of syngeneic and allogeneic lymphoid tumour cell lines in vitro, and it was found that cell suspensions from nude mice were always significantly more active than those from normal mice, and that the most active effector population was a polymorph-enriched peritoneal-exudate cell suspension.
(8) Analysis of Alu repeat polymorphism should be useful in construction of a high-resolution map and also in identifying genotypes of individuals for clinical and other purposes because the repeats are ubiquitous and the technique for their detection is simple.
(9) Structurally altered polymorphic variants with reduced activity, such as tetrameric interface mutant Ile-58 to Thr, may produce not only an early selective advantage, through enhanced cytotoxicity of tumor necrosis factor for virus-infected cells, but also detrimental effects from increased mitochondrial oxidative damage, contributing to degenerative conditions, including diabetes, aging, and Parkinson's and Alzheimer's diseases.
(10) Subcutaneous polymorphic sarcomas were induced in 8 out 27 offspring of syrian golden Hamsters after treatment of pregnant mother animals at day 15 of gestation with Adenovirus 12.
(11) Because all differences were found only in this region of the molecule, and because DR alpha-chains seem to be relatively non-polymorphic, these positions in the DR beta-chain must have a major role in influencing T-cell recognition of the DR molecule.
(12) The dense polymorphous bodies of the B pinealocytes are ultrastructurally identified as lysosomes.
(13) Multiple polymorphisms on the DQ molecule(s) have been detected by monoclonal antibodies (MoAbs).
(14) The PvuII-CIII and PvuII-AIV polymorphisms were both associated with differences in apo AI levels, explaining 3.7%-5.7% of the sample variance.
(15) Affinity constants, binding kinetics and serum concentrations of hSHBG from individuals having a 4-band pattern were similar to those obtained in individuals with a 2-band pattern, thus suggesting that the mechanism responsible for the generation of polymorphic variants of hSHBG reported herein did not involve the steroid binding site of the molecule.
(16) Polymorphism of PGM1 and PGM3 types was investigated in placental extracts from 127 unrelated Japanese parturients living in Yamanashi Prefecture.
(17) Genomic, cDNA, and cosmid probes have been used to isolate homologous cosmids from human chromosomes 7, 10, 16, 17 and X as part of a search for polymorphic nucleotide sequences.
(18) A family with occurrence of juvenile sudden death and effort polymorphous ventricular tachycardias is reported.
(19) As an extension to the variety of existing techniques using polymorphic DNA markers, the Random Amplified Polymorphic DNA (RAPD) technique may be used in molecular ecology to determine taxonomic identity, assess kinship relationships, analyse mixed genome samples, and create specific probes.
(20) We report that specific human (dC-dA)n.(dG-dT)n blocks are polymorphic in length among individuals and therefore represent a vast new pool of potential genetic markers.