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nomen substitutum

nomen substitutum  

In taxonomy, a new, replacement name, published as a substitute for an invalid one (e.g. a junior synonym).
hypotremate

hypotremate  

Applied to gill openings on the ventral surface beneath the pectoral fins (e.g. in skates and rays). Compare pleurotremate.
localized repeat sequences

localized repeat sequences  

Repetitive DNA that occurs in a tandem array, often with a short repeating unit (e.g. satellite DNA).
Noctuidae

Noctuidae  

; subclass Pterygota, order Lepidoptera)Huge family of small to large moths, which are usually drab, sometimes with eyespots. The proboscis is usually well developed. Larvae are not hairy. Pupation ...
modified bases

modified bases  

Postsynthetically altered nucleotides of the four usual bases (A, T, G, and C) of DNA. See modification methylases.
nonbasic chromosomal proteins

nonbasic chromosomal proteins  

Acidic or neutral proteins (therefore not histones) associated with chromosomes: e.g., certain enzymes such as DNA polymerases.
psychrotroph

psychrotroph  

An organism that can grow at low temperatures (e.g. 15°C or below) but that grows better at higher temperatures.
glacial period

glacial period  

A general term used to describe either a glacial stage (e.g. Devensian) or an indeterminate period of glaciation.
kentron

kentron  

A hollow, dart-like structure produced by certain parasitic barnacles (e.g. Sacculina carcini) that pierces the cuticle of the host.
Combretaceae

Combretaceae  

A family of trees, shrubs, and climbers, in which the flowers are pentamerous, with an inferior ovary surmounted by a disc. The fruits are often winged, and sometimes are fleshy and edible. ...
morphometrics

morphometrics  

A technique of taxonomic analysis using measurements of the form (morphology) of organisms and typically involving multivariate statistics.
tiger

tiger  

The tiger is proverbial for its ferocity and cunning.have a tiger by the tail have embarked on a course of action which proves unexpectedly difficult but which cannot easily or safely be abandoned. ...
human mitotic chromosomes

human mitotic chromosomes  

The number of human chromosomes observed at mitosis was incorrectly reported as 24 pairs by W. Flemming in 1898. It was not until 1956 that the correct number was determined as 23 pairs by J. H. Tjio ...
leaf physiognomy

leaf physiognomy  

The form of leaves, variations in which are largely influenced by rainfall and temperature and can be used in palaeoclimatological studies. In simple studies the percentage of leaves with entire ...
adaxial

adaxial  

Of a plant organ, facing towards the axis or main stem (e.g. the upper surface of leaves). Compare abaxial.
Conocephalum

Conocephalum  

(order Marchantiales)A genus of robust, thallose liverworts. C. conicum has a broad, ribbon-like thallus which is irregularly forked and up to 20 cm long and 2 cm wide. The upper surface is ...
Plethodontidae

Plethodontidae  

; class Amphibia, order Urodela)A family of amphibians in which the adults usually lack gills and lungs. They are characterized by a nasolabial groove, a glandular extension from the upper edge of ...
trichome

trichome  

1 An outgrowth from an epidermal cell (e.g. a root hair).2 In certain bacteria and cyanobacteria, a chain of vegetative cells; a cyanobacterial trichome is often surrounded by a slimy sheath.
Gonystylus

Gonystylus  

(family Thymelaeaceae)A genus of trees whose bark contains silky, irritant fibres. The leaves are dotted with glands. The flowers have 5 sepals, no petals, a disc, many stamens, and a superior ovary. ...
Galaxiidae

Galaxiidae  

; subclass Actinopterygii, order Salmoniformes)A family of mainly freshwater fish that have a slender, almost tubular, scaleless body. The single dorsal fin is placed well back, close to the rounded ...

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