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The evolution of the Y chromosome with X-Y recombination.
... T h e analytical results from the symmetric models suggests that tighter linkage can result in stable equilibria with a greater difference in allele frequency between th[r] ... See full document
10
An Adaptive Hypothesis for the Evolution of the Y Chromosome
... the evolution of Y ...the Y reflects its inability to evolve ...the Y must lag far behind that of the recombining ...(fit) X-linked alleles and a decrease in the expression of (unfit) ... See full document
6
Y chromosome evolution in the subgenus Mus (genus Mus).
... Additionally, using Y-specific or Y-enriched re- peated DNA sequences as probes, restriction fragment length polymorphisms have been identified among Y chromosomes of human po[r] ... See full document
11
Genetic Hitchhiking and the Evolution of Reduced Genetic Activity of the Y Sex Chromosome
... The genetic hitchhiking model predicts that there should be selection for null alleles after deleterious mutations have been fixed on the Y chromosomes and dosage tolerance[r] ... See full document
7
Genetic Differentiation and Efficient Sex-specific Marker Development of a Pair of Y- and X-linked Markers in Yellow Catfish
... To reveal genetic difference between Pf62-Y and Pf62-X alleles, we further obtained a 5362 bp Pf62-X allele sequence(GenBank accession number: KF593812) from a XX female individual by genomic walking ... See full document
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Estimating Tempo and Mode of Y Chromosome Turnover: Explaining Y Chromosome Loss With the Fragile Y Hypothesis
... fragile Y hypothesis is available in ...of Y loss are ...the Y is occasionally lost (Fernández- Donoso et ...reported Y chromosome losses (Table 2) (Borodin et ...of Y chromo- ... See full document
12
Reduced Sequence Variability on the NeoY Chromosome of Drosophila americana americana
... sex chromosome evolution, the degeneration of nonrecombining Y ...primary X chromosome of ...neo-Y chromosome relative to the neo-X in ...a Y ... See full document
13
Chromosome territories, X;Y translocation and Premature Ovarian Failure: is there a relationship?
... derivative Y chromosome (data not shown): it originated from an error occurred during male meiotic cellular division, that led to an Xq and Yq inter- change, a rare event, as reported in literature ...which ... See full document
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Preferential Y-Y pairing and synapsis and abnormal meiotic recombination in a 47,XYY man with non obstructive azoospermia
... stages leading to a continuous elimination of these cells during spermatogenesis. Solari and Valzacchi [23] ob- served a high level of germ cell death at or immediately after the meiotic divisions. Milazzo et al. [24] ... See full document
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THE GENETICS OF ARTEMIA SALINA. V. CROSSING OVER BETWEEN THE X AND Y CHROMOSOMES
... The position of the alleles at the white locus does not affect recombination; that is, within a stock descended from a single female, X+Y, females do not differ from X,Y+ fe[r] ... See full document
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X-Y Exchange and the Coevolution of the X and Y rDNA Arrays in Drosophila melanogaster
... Analysis of BamHI and EcoRI digests of X + rDNA indicates that rDNA repeats containing the major T 1 insertion are significantly, if not totally, clustered within the X +[r] ... See full document
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Observation on the Cubic Diophantine Equation with Four Unknowns $(x^3+y^3)+(x+y)(x+y+1)=zw^2$
... Department of Mathematics, Shrimati Indira Gandhi College, Trichy-2 Tamilnadu INDIA, e.mail: [email protected].. Department of Mathematics, Shrimati Indira Gandhi College, Trichy[r] ... See full document
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THE DUBININ EFFECT AND THE Y CHROMOSOME
... Thus extra Y chromosomes modify the Dubinin effect in the same way that they modify the variegation of euchromatic loci and not as they modify position effects of the light gene.[r] ... See full document
12
THE Y CHROMOSOME OF DROSOPHILA PSEUDOOBSCURA
... Further studies, to be reported in the present paper, have increased the number of the types of Y chromosomes known in the species up to a t least six, and shown that each of[r] ... See full document
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Four Steps Continuous Method for the Solution of y″= f (x, y, y′)
... [3] S. O. Adee, P. Onumanyi, U. V. serisena and Y. A. Ya- haya, “A Note on Starting Numerov’s Method More Ac- curately by an Hybrid Formula of Order Four for an Ini- tial Value Problem,” Journal of Computational ... See full document
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On series solutions of y″−f(x)y=0 and applications
... In this paper, we present a constructive approach which yields explicit expressions for Taylor series solutions in terms of initial conditions. To the best of our knowledge, this is the first explicit formula giving ... See full document
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DISTRIBUTIVE PAIRING OF COMPOUND CHROMOSOMES IN FEMALES OF DROSOPHILA MELANOGASTER
... When a Y chromosome, a normal fourth chromosome and the translocated fragment of a third chromosome on a fourth-chromosome centromere are all available for pair- ing, the Y [r] ... See full document
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ANALYSIS OF Y-LINKED MUTATIONS TO MALE STERILITY IN DROSOPHILA MELANOGASTER
... In spite of this, after irradiation with X-rays or y-rays, the incidence of sterility among males receiving an irradiated Y chromosome is greater than twice that of males recei[r] ... See full document
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A repeated segment on the mouse Y chromosome is composed of retroviral-related, Y-enriched and Y-specific sequences.
... T h e patterns of hybridization observed when any of the EcoRI fragments isolated from XY6 or XY45 are used to probe SOUTHERN blots containing male and female DNA s[r] ... See full document
12
Variation among Beef Bulls in the Ratio of X to Y Chromosome Bearing Spermatozoa
... of X- to Y-chromosome bearing sperm would be expected to be ...that Y-bearing sperm within ejaculates of bull semen varied from 24% to ...of Y-bearing sperm in 36 lots (ejaculates) of ... See full document
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