| heteroduplex mapping | <molecular biology> Heteroduplex mapping is a lab technique used to locate a particular sequence of nucleotides. It involves making a heteroduplex by pairing the unknown nucleic acid strand with a reference strand which has a known sequence. (09 Oct 1997) |
|---|---|
| heterodymus | Unequal conjoined twins in which the incomplete parasite, consisting of head and neck and, to some extent, thorax, is attached to the anterior surface of the autosite. See: conjoined twins. Origin: hetero-+ G. Didymos, twin (05 Mar 2000) |
| heteroecious | <microbiology> Term used to describe a parasite that uses more than one hosts during its life cycle. Compare: autoecious. (09 Oct 1997) |
| heteroerotic | Having to do with sexual excitement toward the opposite sex. By contrast with alloerotic. (12 Dec 1998) |
| heteroeroticism | A condition of sexual excitement brought about by congress with a person of the opposite sex. (05 Mar 2000) |
| heteroerotism | Sexual attraction toward another person. Compare: autoerotism. Synonym: alloeroticism, heteroerotism. Origin: allo-+ G. Eros, love (05 Mar 2000) |
| heterofermentation | <chemistry> Any fermentation in which there is more than one major end-product. Synonym: heterolactic fermentation. (09 Oct 1997) |
| heterogametic | Having sex gametes of contrasting types; human males are heterogametic. Synonym: digametic. Origin: hetero-+ G. Gametikos, connubial (05 Mar 2000) |
| heterogametic embryo | A male embryo with XY karyotype. (05 Mar 2000) |
| heterogametic sex | <biology> The gender which has two different sex chromosomes. For example: In humans, the male is heterogametic because he is XY (has an X chromosome and a Y chromosome). In birds, the female is heterogametic because she is WZ (has a W chromosome and a Z chromosome). Compare: homogametic sex. (09 Oct 1997) |
| heterogamous | <plant biology> Producing flowers of two or more kinds with respect to their fertile organs, for example male and female or bisexual and female. Compare: homogamous. (09 Oct 1997) |
| heterogamy | <plant biology> The condition in a flowering plant species of having two or more types of flowers. For example: flowers which have only male parts along with flowers which have only female parts. Compare: homogamy. The condition in a flowering plant species where both the male and female parts of the flower mature at the same time, so that the individual flower can pollinate itself. (Some species have come up with other obstacles to prevent that possibility, however.) (09 Oct 1997) |
| heterogangliate | <physiology> Having the ganglia of the nervous system unsymmetrically arranged; said of certain invertebrate animals. Origin: Hetero- + gangliate. Source: Websters Dictionary (01 Mar 1998) |
| heterogeneic antigen | An antigen or antigenic determinant which is found in different tissues in more than one species. (05 Mar 2000) |
| heterogeneity | The condition or state of being different in kind or nature. (05 Dec 1998) |