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acrocentric
acrocentric, a. Cytology. (ækrəʊˈsɛntrɪk) [f. acro- + -centric.] Of a chromosome: having the centromere close to the end. Hence as n. Cf. metacentric a., telocentric a.1945 M. J. D. White Animal Cytol. & Evol. ii. 20 A distinction still exists in practice between those [chromosomes] which have the c...
Oxford English Dictionary
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Acridoidea
In species of Acrididae and Romaleidae it is common to have acrocentric chromosomes with a fundamental number (FN), i.e. number of chromosome arms, of However, chromosomal rearrangements are frequently found as deviations from the standard acrocentric karyotype.
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Panthera tigris has 38 chromosomes. The karyotype has 16 pairs of metacentric and submetacentric autosomes and two pairs of acrocentric autosomes. The X chromosome is a medium-siz
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metacentric
metacentric, a. (mɛtəˈsɛntrɪk) [ad. F. métacentrique, f. métacentre: see prec. and -ic.] 1. Of or pertaining to a metacentre.1798 Phil. Trans. LXXXVIII. 242 The curve..is termed the metacentric curve, being the line traced by the successive metacentres. 1881 Times 6 Jan. 11/2 The result of the incli...
Oxford English Dictionary
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Acentric fragment
See also
Metacentric
Submetacentric
Acrocentric
Telocentric
References
Classical genetics
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telocentric
telocentric, a. (and n.) Cytology. (tɛləʊ-, tiːləʊˈsɛntrɪk) [f. telo-1 + -centric.] Of a chromosome: having the centromere at the end. Hence as n. Cf. acrocentric, metacentric adjs.1939 C. D. Darlington in Jrnl. Genetics XXXVII. 349 This does not mean that terminal centromeres or telocentric chromos...
Oxford English Dictionary
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Robertsonian translocation
These are known as acrocentric chromosomes. Humans have five of these acrocentric chromosomes: 13, 14, 15, 21 and 22. A Robertsonian translocation results when the long arms of two acrocentric chromosomes fuse at the centromere and the two short arms are lost.
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Robertsonian
Robertsonian, a. Cytology. (ˌrɒbətˈsəʊnɪən) [f. the name of William R. B. Robertson (1881–1941), U.S. biologist, who first described such translocations in 1916 (Jrnl. Morphol. XXVII. 220) + -ian.] Applied to the formation of a metacentric chromosome from two heterologous acrocentric chromosomes by ...
Oxford English Dictionary
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RNR4
References
Further reading
Nucleolus organizer regions are chromosomal regions crucial for the formation of the nucleolus, located on the short arms of the acrocentric
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Encyclopedia of Life
Panthera tigris has 38 chromosomes. The karyotype has 16 pairs of metacentric and submetacentric autosomes and two pairs of acrocentric autosomes. The X chromosome is a medium-siz
eol.org
Distal trisomy 10q
lengths are unequal, chromosome is said to be submetacentric, and if p arm is so short that is hard to observe, but still present, then the chromosome is acrocentric
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RNR2
References
Further reading
Nucleolus organizer regions are chromosomal regions crucial for the formation of the nucleolus, located on the short arms of the acrocentric
wikipedia.org
en.wikipedia.org
RNR1
References
Further reading
Nucleolus organizer regions are chromosomal regions crucial for the formation of the nucleolus, located on the short arms of the acrocentric
wikipedia.org
en.wikipedia.org
Dugesia sagitta
Karyology
This Dugesia'' species, from what only sexual reproducing specimens are known, have a karyoptype of 2n=16, constituted only by acrocentric chromosomes
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RNR3
References
Further reading
Nucleolus organizer regions are chromosomal regions crucial for the formation of the nucleolus, located on the short arms of the acrocentric
wikipedia.org
en.wikipedia.org