A revised map of chromosome 15 in Gossypium hirsutum

1986 ◽  
Vol 28 (2) ◽  
pp. 272-277 ◽  
Author(s):  
Margaret Y. Menzel ◽  
Kenneth L. Richmond
Keyword(s):  
Linkage Group ◽  
Gossypium Hirsutum ◽  
Marker Genes ◽  
Chromosome 15 ◽  
Linkage Maps ◽  
Leaf Veins ◽  
Group Ii ◽  
The Right

Three translocations involving chromosome 15 (H15) in cotton, T4R;15L 1040, T11L;15L 1058a, and T15R;20R SL15, were tested against the H15 marker genes okra leaf [Formula: see text] and veins fused (vf). The latter gene was also tested against T15L;16L 2767. Duplication deficiencies monosegmental for H15 (easily recognized by their narrow distorted bacteoles) showed that [Formula: see text] is in the right (R) arm distal to the SL15 breakpoint (bp-SL15) and cannot be distal to bp-1040 or bp-1058a in the left (L) arm. Recombination frequencies between the three bp's and [Formula: see text] showed that the order is (L) bp-1058a–bp-1040–centromere–bp-SL15–[Formula: see text]. [Formula: see text] is approximately 28 cM (centi-Morgan) from the centromere. The L and R arms of H15 defined by translocations correspond, respectively, to the long and short arms defined by telosomes. Duplication deficiencies monosegmental for H15 showed that vf is not distal to either the L arm or the R arm bp's in H15. Therefore vf and the genes Lg, s, and cr, which are closely linked to vf, cannot be located on H15 as had been assumed. "Linkage group II" thus contains genes located on two different chromosomes. We suggest retaining linkage group II for Lg and genes closely linked to it and designating the group of genes on H15 linked to [Formula: see text] as linkage group XIX.Key words: cotton, translocations, linkage maps, duplication–deficiencies, okra leaf, veins fused.

A revised map of chromosome 16 in Gossypium hirsutum

Genome ◽  
1987 ◽  
Vol 29 (6) ◽  
pp. 823-827 ◽  
Author(s):  
Margaret Y. Menzel ◽  
Kenneth L. Richmond ◽  
Brian J. Dougherty
Keyword(s):  
Linkage Group ◽  
Gossypium Hirsutum ◽  
Key Words ◽  
Direct Evidence ◽  
Marker Gene ◽  
Chromosome 15 ◽  
Chromosome 16 ◽  
Group Iii ◽  
The Right ◽  
Key Words Cotton

Four translocations involving chromosome 16 (H16) in cotton (T1R;16R 2770, T1R;16R 4672, T15L;16R 8-5Ga, and T15R;16R 2767) were tested against telosomes for chromosome 16 and the H16 marker gene red plant (R1). The telosome tests confirmed that bp-2770 and bp-4672 are in the long (=right) arm of chromosome 16 and showed that bp-8-5Ga and bp-2767 are also in the long arm of H16, rather than in the short (=left) arm as previously reported. The locations of the chromosome 15 (H15) bp's for 8-5Ga and 2767 are also revised. A telosome test showed that H15 bp-8-5Ga is in the long (=left) arm. Consequently, H15 bp-2767 is placed in the short (=right) arm of chromosome 15. Duplication deficiencies mono- or tri-segmental for H16 (verified cytologically) showed that R1 is in the right (R) arm 24 cM distal to bp-2767 and 10 cM distal to bp-8-5Ga. Recombination frequencies showed that R1 is 13 cM from bp-4672 and 15 cM from bp-2770 (not significantly different). However, both of the T1R;16R translocations yield negligible frequencies of duplication deficiencies and therefore offered no direct evidence as to whether their breakpoints are proximal or distal to R1. Previous estimates have placed both bp-2770 and bp-4672 43 cM from the centromere. Therefore the order must be as follows: (left)–centromere–bp-2767-bp-8-5Ga–R1–bp-4672/bp-2770 (right). Key words: cotton, Gossypium hirsutum, chromosome 16, translocations, linkage map, duplication-deficiences, red plant, linkage group III.

Genetics of Glossina morsitans morsitans (Diptera: Glossinidae). XIII. Mapping the locus for tetrazolium oxidase in linkage group I and refinement of the linkage group II map

Genome ◽  
1988 ◽  
Vol 30 (6) ◽  
pp. 885-887 ◽  
Author(s):  
R. H. Gooding ◽  
B. M. Rolseth ◽  
S. A. Tarimo
Keyword(s):  
Linkage Group ◽  
Key Words ◽  
Aldehyde Oxidase ◽  
Glossina Morsitans Morsitans ◽  
Linkage Maps ◽  
Glossina Morsitans ◽  
Eye Color ◽  
Group I ◽  
Group Ii

The locus for tetrazolium oxidase, To, is mapped at 4.3 ± 1.3 recombination units from the locus for arginine phosphokinase, Apk, in linkage group I, and the distance between the eye color locus, sal, and Apk is confirmed to be about 39.5 ± 3.2 recombination units. In linkage group II the loci for aldehyde oxidase, Ao, and for two esterases are arranged in the order Ao Est-1 Est-2 with 3.5 ± 1.2 recombination units separating Ao and Est-1 and 8.3 ± 1.8 recombination units separating Est-1 and Est-2.Key words: Glossina morsitans, tetrazolium oxidase, aldehyde oxidase, esterases, linkage maps.

scholarly journals Identification of a putative structural gene for cathepsin D in Caenorhabditis elegans.

Genetics ◽  
1988 ◽  
Vol 119 (2) ◽  
pp. 355-363
Author(s):  
L A Jacobson ◽  
L Jen-Jacobson ◽  
J M Hawdon ◽  
G P Owens ◽  
M A Bolanowski ◽  
...  
Keyword(s):  
Caenorhabditis Elegans ◽  
Linkage Group ◽  
Structural Gene ◽  
Cathepsin D ◽  
Normal Growth ◽  
Mutant Gene ◽  
Wild Type ◽  
Type Activity ◽  
Group Ii ◽  
The Right

Abstract Mutants of Caenorhabditis elegans having about 10% of wild-type activity of the aspartyl protease cathepsin D have been isolated by screening. Mutant homozygotes have normal growth rates and no obvious morphological or developmental abnormalities. The mutant gene (cad-1) has been mapped to the right extremity of linkage group II. Heterozygous animals (cad-1/+) show intermediate enzyme levels and animals heterozygous for chromosomal deficiencies of the right extremity of linkage group II have 50% of wild-type activity. Cathepsin D purified from a mutant strain has a lower activity per unit mass of pure enzyme. These data suggest that cad-1 is a structural gene for cathepsin D.

Genetic basis of sterility in hybrids from crosses of Glossina morsitans submorsitans and Glossina morsitans morsitans (Diptera: Glossinidae)

Genome ◽  
1989 ◽  
Vol 32 (3) ◽  
pp. 479-485 ◽  
Author(s):  
R. H. Gooding
Keyword(s):  
Linkage Group ◽  
X Chromosome ◽  
Hybrid Sterility ◽  
Glossina Morsitans Morsitans ◽  
Marker Genes ◽  
Glossina Morsitans ◽  
Hybrid Male ◽  
X Chromosomes ◽  
Glossina Morsitans Submorsitans ◽  
Group Ii

Glossina morsitans submorsitans Newstead and Glossina morsitans morsitans Westwood carrying two marker genes on the X chromosome, two in linkage group II, and one in linkage group III were hybridized. About 17% of the F1 and from 33 to 56% of the backcross males fertilized G. m. submorsitans, but only one F1 and two backcross males fertilized G. m. morsitans. Similarly, F1 and backcross females were fertilized by G. m. submorsitans but rarely by G. m. morsitans. Chromosomal composition of F1 and backcross males indicated that hybrid male sterility is due to incompatibility of the X chromosome from one subspecies and the Y from the other subspecies or possibly an incompatibility between X chromosomes and autosomes from different subspecies. Results are discussed in the context of a model for evolution of X and Y incompatibility and a model for evolution of maternally inherited factors that cause unidirectional sterility in males. In hybrid females, intrachromosomal recombination was suppressed in the X chromosome and in linkage group II. Fertility of backcross females, mated to G. m. submorsitans, could not be related to the chromosomal composition of the females.Key words: Glossina, hybrid sterility, tsetse, X chromosomes.

scholarly journals COMPLEMENTATION ANALYSIS OF LINKED CIRCADIAN CLOCK MUTANTS OF NEUROSPORA CRASSA

Genetics ◽  
1976 ◽  
Vol 82 (1) ◽  
pp. 9-17 ◽  
Author(s):  
Jerry F Feldman ◽  
Marian N Hoyle
Keyword(s):  
Linkage Group ◽  
Circadian Clock ◽  
Neurospora Crassa ◽  
Period Length ◽  
Complementation Analysis ◽  
Wild Type ◽  
The Right

ABSTRACT A fourth mutant of Neurospora crassa, designated frq-4, has been isolated in which the period length of the circadian conidiation rhythm is shortened to 19.3 ± 0.3 hours. This mutant is tightly linked to the three previously isolated frq mutants, and all four map to the right arm of linkage group VII about 10 map units from the centromere. Complementation tests suggest, but do not prove, that all four mutations are allelic, since each of the four mutants is co-dominant with the frq  + allele—i.e., heterokaryons have period lengths intermediate between the mutant and wild-type—and since heterokaryons between pairs of mutants also have period lengths intermediate between those of the two mutants.

scholarly journals A gene triplet in the mouse

1970 ◽  
Vol 15 (2) ◽  
pp. 227-235 ◽  
Author(s):  
A. G. Searle ◽  
Gillian M. Truslove
Keyword(s):  
Linkage Group ◽  
In Utero ◽  
White Hair ◽  
Close Linkage ◽  
Group Ii ◽  
Tail Tip ◽  
Dominant Spotting

SUMMARYMice heterozygous for rump-white (Rw) have white hair in lumbo-sacral and caudal regions, although the tail-tip is sometimes pigmented. The homozygote is lethal in utero. No recombination has been found between Rw and the very closely linked spotting genes patch (Ph) and the viable allele of W (Wv). The compounds between these genes are all viable and fertile, although individual homozygotes are either lethal (Ph, Rw) or sterile and anaemic (Wv). It is concluded that they are non-allelic, but form a gene triplet. Close linkage between a cluster of dominant spotting genes and an angora gene in mouse and rabbit provide evidence for homology of part of linkage group II in the rabbit and part of linkage group XVII in the mouse.

scholarly journals Curly-whiskers and its linkage with tail-kinks in linkage group II of the mouse

1966 ◽  
Vol 8 (1) ◽  
pp. 111-113 ◽  
Author(s):  
D. S. Falconer ◽  
J. H. Isaacson
Keyword(s):  
Linkage Group ◽  
Inbred Strain ◽  
Recessive Gene ◽  
Coat Colour ◽  
Group Ii ◽  
Research Institute

Curly-whiskers (cw) is a recessive gene which was found in 1958 by Mr C. J. W. Smith of the Chester Beatty Research Institute, London. It arose in a subline of the CBA/Cbi inbred strain. The first mutant animals were one male and one female in a litter of five. The two mutants were mated together and a sib-mated subline was continued from them in which 500 mice were bred, all of which were curly-whiskered. This established the mutant to be fully penetrant. Curly-whiskers resembles the hair-waving genes in causing waving of the vibrissae, but it has no obvious waving effect on the hairs of the coat. The coat texture is, however, slightly abnormal and Mr Smith noted also that on the CBA background there was an appreciable darkening of the coat colour. Homozygotes (cw/cw) are easily classifiable soon after birth by the curled vibrissae. Heterozygotes (+/cw) often have slightly curled vibrissae, and the gene is therefore not fully recessive; but the distinction between +/cw and +/+ could not be relied on, and in the linkage tests cw was treated as a recessive gene.

scholarly journals Mandibular movements in children with and without signs and symptoms of temporomandibular disorders

2004 ◽  
Vol 12 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Leonardo Rigoldi Bonjardim ◽  
Maria Beatriz Duarte Gavião ◽  
Luciano José Pereira ◽  
Paula Midori Castelo
Keyword(s):  
Clinical Signs ◽  
Mouth Opening ◽  
Signs And Symptoms ◽  
Lateral Movement ◽  
Mandibular Movement ◽  
Group I ◽  
Group Ii ◽  
The Right ◽  
Mandibular Movements ◽  
Digital Caliper

This research aimed to evaluate mandibular movements in children with and without signs and symptoms of temporomandibular dysfunction. The sample taken consisted of 99 children aged 3 to 5 years distributed in two groups: I - Absence of signs and/or symptoms of TMD (25 girls/40 boys); II - Presence of signs and symptoms of TMD (16 girls/18 boys). The symptoms were evaluated through an anamnesis questionnaire answered by the child's parents/caretakers. The clinical signs were evaluated through intra- and extraoral examination. Maximum mouth opening and left/right lateral movements were measured using a digital caliper. The maximum protrusive movement was measured using a millimeter ruler. The means and standard deviations for maximum mouth opening in Group I and Group II were 40.82mm±4.18 and 40.46mm±6.66, respectively. The values found for the left lateral movement were 6.96mm±1.66 for Group I and 6.74mm±1.55 for Group II, while for the right lateral movement they were 6.46mm±1.53 and 6.74mm±1.77. The maximum protrusion movements were 5.67mm±1.76 and 6.12mm±1.92, in Groups I and II, respectively. The mandibular movement ranges neither differed statistically between groups nor between genders. FAPESP Process 96/0714-6.

Pressure-flow and volume-flow relationships of the systemic circulation of the dog

1975 ◽  
Vol 229 (3) ◽  
pp. 761-769 ◽  
Author(s):  
JF Green
Keyword(s):  
Volume Flow ◽  
Back Pressure ◽  
Atrial Pressure ◽  
Right Atrial ◽  
Right Atrial Pressure ◽  
Sodium Pentobarbital ◽  
Pressure Flow ◽  
Group I ◽  
Group Ii ◽  
The Right

Mean systemic pressure-flow (Ps-Q) and volume-flow (V-Q) relationships of the systemic vascular bed were determined in two groups of dogs anesthetized with sodium pentobarbital (group I) and with methoxyflurane (group II). All blood returning to the heart (Q) was removed from the right atrial appendage and passed through a Starling resistor, a pump, a flowmeter , and then returned directly into the pulmonary artery. Ps was estimated from plateau values of right atrial pressure obtained during stop-flow procedures. Both the Ps-Q and V-Q relationships were nonlinear. This nonlinearity may be attributed to a redistribution of blood flow between systemic vascular compartments of unequal time constants. With group II, the Ps-Q and V-Q curves were shifted markedly to the right along the Ps and V axes, respectively. Evidence is presented which suggests that this shift was due to an effective back pressure other than right atrial pressure produced by a hepatic waterfall. The beta-adrenergic antagonist practolol increased the effective back pressure and augmented the shift in the Ps-Q and V-Q curves.

scholarly journals Ground Reaction Forces during Vertical Hops Are Correlated with the Number of Supervised Physiotherapy Visits after Achilles Tendon Surgery

2021 ◽  
Vol 10 (22) ◽  
pp. 5299
Author(s):  
Łukasz Sikorski ◽  
Andrzej Czamara
Keyword(s):  
Achilles Tendon ◽  
Study Groups ◽  
The Body ◽  
Ground Reaction Forces ◽  
Group I ◽  
Tendon Surgery ◽  
Reaction Forces ◽  
Number Of Visits ◽  
Group Ii ◽  
The Right

The objective of this study was to assess the effectiveness of, and the correlation between, an average of 42 supervised physiotherapy (SVPh) visits for the vertical ground reaction forces component (vGRF) using ankle hops during two- and one-legged vertical hops (TLH and OLH, respectively), six months after the surgical suturing of the Achilles tendon using the open method (SSATOM) via Keesler’s technique. Hypothesis: Six months of supervised physiotherapy with a higher number of visits (SPHNVs) was positively correlated with higher vGRF values during TLH and OLH. Group I comprised male patients (n = 23) after SSATOM (SVPh x = 42 visits), and Group II comprised males (n = 23) without Achilles tendon injuries. In the study groups, vGRF was measured during TLH and OLH in the landing phase using two force plates. The vGRF was normalized to the body mass. The limb symmetry index (LSI) of vGRF values was calculated. The ranges of motion of the foot and circumferences of the ankle joint and shin were measured. Then, 10 m unassisted walking, the Thompson test, and pain were assessed. A parametric test for dependent and independent samples, ANOVA and Tukey’s test for between-group comparisons, and linear Pearson’s correlation coefficient calculations were performed. Group I revealed significantly lower vGRF values during TLH and OLH for the operated limb and LSI values compared with the right and left legs in Group II (p ≤ 0.001). A larger number of visits correlates with higher vGRF values for the operated limb during TLH (r = 0.503; p = 0.014) and OLH (r = 0.505; p = 0.014). An average of 42 SVPh visits in 6 months was insufficient to obtain similar values of relative vGRF and their LSI during TLH and OLH, but the hypothesis was confirmed that SPHNVs correlate with higher relative vGRF values during TLH and OLH in the landing phase.

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