univalent

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Related to univalents: bivalent

univalent

 [u″nĭ-va´lent]
having a valence of one.

mon·o·va·lent

(mon'ō-vā'lent),
1. Having the combining power (valence) of a hydrogen atom. Synonym(s): monatomic (2) , univalent
2. Pertaining to a monovalent (specific) antiserum to a single antigen or organism.

univalent

/uni·va·lent/ (u″nĭ-va´lent) having a valence of one.

univalent

(yo͞o′nĭ-vā′lənt)
adj.
1. Chemistry
a. Having valence 1, regardless of whether the valence is positive or negative.
b. Having only one valence.
2. Genetics Of or relating to a chromosome that is not paired or united with its homologous chromosome during synapsis.
3. Immunology Having only one site of attachment. Used of an antibody or antigen.
4. Immunology Containing antigens from a single strain of a microorganism or virus. Used of a vaccine or serum.
n. Genetics
A univalent chromosome.

univalent

mon·o·va·lent

(mon'ō-vā'lĕnt)
1. Having the combining power (valence) of a hydrogen atom.
Synonym(s): monatomic (2) , univalent.
2. Pertaining to a monovalent (specific) antiserum to a single antigen or organism.

univalent

having a valence of one.
References in periodicals archive ?
In the present work, these lines showed differences in the meiotic behavior: tricepiro Don Rene had a greater number of univalents in Metaphase I and micronuclei in the tetrads than FA-L2.
Figure 2C represents a metaphase II nucleus, with 10 autosomes and the noticeable univalent X chromosome.
In the euploid plants, univalents were observed in 14% of the metaphase I cells compared to 84% in the aneuploids.
Whereas the chromosomes of the TMM hybrids paired mostly as M-M bivalents, leaving the T chromosomes as univalents, pairing in the TTM hybrids led predominantly to the formation of trivalents.
We propose that segregation errors occur more often in the egg than in sperm; and when those errors occur, the egg tends to retain the errant chromosome(s) (either univalents or nondisjoined bivalents) rather than rejecting them into the polar body.
3], one would not expect to observe a loss in quadrivalents and an increase in univalents (Table 1).
australe hexaploids and in two plants presenting 25 bivalents and 2 univalents ([G.
Of 82 cells examined, the number of univalents ranged from 4 to 11.
Chromosome pairing configurations were determined from 10 well-spread cells at diakinesis for the number of univalents, bivalents, trivalents, and quadrivalents per cell.
Common dallisgrass is an obligate apomict with 50 chromosomes that associate as 20 bivalents and 10 univalents during metaphase I of meiosis (Bashaw and Forbes, 1958; Bashaw and Holt, 1958).
The large number of univalents in the wheat x jointed goatgrass hybrids because of having single copies of the A, B, and C genomes resulted in great variation in the total number of chromosomes in B[C.
2] plants homozygous for the ph1b gene were selected on the basis of two criteria, first, for the increased frequency of univalents and rod bivalents at meiosis (Koebner and Shepherd, 1985) and second, for the presence of homoeologous pairing after test crossing with the related species Aegilops variabilis Eig (Asiedu et al.