Cladistics vs Null - What's the difference?
cladistics | null |
(systematics) An approach to biological systematics in which organisms are grouped based upon synapomorphies]] (shared derived characteristics) only, and not upon [[symplesiomorhy, symplesiomorphies (shared ancestral characteristics).
* 1991 , Warren W. Burggren, William E. Bemis, Physiological Evolution: Paradigms and Pitfalls'', Matthew H. Nitecki, Doris V. Nitecki (editors), ''Evolutionary Innovations ,
* 1992 , , The Diversity of Life ,
* 2001', Clare Bates Congdon, ''Gaphyl: A Genetic Algorithms Approach to '''Cladistics'' , Luc de Raedt, Arno Siebes (editors), ''Principles of Data Mining and Knowledge Discovery: 5th European Conference PKDD 2001 , Volume 5, Springer, LNAI 2168,
A non-existent or empty value or set of values.
Zero]] quantity of [[expression, expressions; nothing.
Something that has no force or meaning.
(computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.
(computing) the attribute of an entity that has no valid value.
One of the beads in nulled work.
(statistics) null hypothesis
Having no validity, "null and void"
insignificant
* 1924 , Marcel Proust, Within a Budding Grove :
absent or non-existent
(mathematics) of the null set
(mathematics) of or comprising a value of precisely zero
(genetics, of a mutation) causing a complete loss of gene function, amorphic.
As nouns the difference between cladistics and null
is that cladistics is (systematics) an approach to biological systematics in which organisms are grouped based upon synapomorphies]] (shared derived characteristics) only, and not upon [[symplesiomorhy|symplesiomorphies (shared ancestral characteristics) while null is zero, nil; the cardinal number before einn.cladistics
English
(wikipedia cladistics)Noun
(-)page 210,
- Here we suggest emphasis on the techniques of cladistics (Eldredge and Cracraft 1980; Wiley 1981; Coddington 1988) because they provide a clear means of organizing phylogenetic information in branching diagrams.
page 153,
- The construction of branching patterns to map evolutionary change is called cladistics'', and the devising of higher classifications (genus and up) to conform with the results of cladistics''' is called ''phylogenetic systematics''.' Cladistics does allow us to judge which species are most likely to share a common ancestor, validating their placement in the same genus or family or higher taxon.
page 67,
- This research investigates the use of genetic algorithms to solve problems from cladistics — a technique used by biologists to hypothesize the relationships between organisms.
See also
* phenetics * phylogeneticnull
English
Noun
(en noun)- (Francis Bacon)
- Since no date of birth was entered for the patient, his age is null .
Adjective
(en adjective)- In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.