Year: 2020
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Karyology
Describing the chromosomes; The study of the cell’s nucleus.
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Juvenile
Young, early form. Relating to or affecting children or adolescents. Young persons who are not old enough to be treated as adults under criminal law. (By contrast, the term minor refers to a young person’s legal ability to act as an adult.) The age limit varies, but the Juvenile Justice and Delinquency Prevention Act of…
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Julaceous
Bearing catkins [obscure term].
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Jugate
Joined in pairs.
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Jointed
With nodes of apparent articulation. Separate or separable at one or more places into pieces.
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Jaculator
A hook-like process on the stalk of a seed that helps in dispersal.
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ITS
The internal transcribed spacers of 18S–26S nuclear ribosomal DNA, characterised by tandem repeat structure and high copy number; typically used in molecular systematics at the species level.
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Isthmus
Narrowed part connecting two wider parts. The narrow connection between two larger bodies or parts of an organ. Narrow connecting part, as the band of tissue connecting the lobes of the thyroid gland. Narrow passage between two connecting body cavities or parts. A constricted or narrowed part of an organ or tissue, such as the…
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Isovalvate
(Of sporangia) with the two halves of equal size.
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Isotype
(In nomenclature) duplicates of a holotype; parts of a single gathering. In immunology, one of the determinants on the immunoglobulin molecule that distinguish among the main classes of antibodies of a given species. They are the same for all normal individuals of that species.