homologous chromosomes
The Role of Centromere Alignment in Meiosis I Segregation of Homologous Chromosomes in Saccharomyces cerevisiae
... of homologous chromosomes: Fragment IA-60 is lo- cated near the end of chromosome I and crossovers that occur near telomeres do not promote meiosis I disjunction (Ross et ...
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NON RANDOM ASSORTMENT OF NON-HOMOLOGOUS CHROMOSOMES IN DROSOPHILA MELANOGASTER
... 5 , the assortment of the sex chromosomes and the free fourth chromosome are independent of each other, suppressed (extra Y) and unsuppressed (no extra Y) progeny are expecte[r] ...
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PAIRING COMPETITION BETWEEN IDENTICAL AND HOMOLOGOUS CHROMOSOMES IN RYE AND GRASSHOPPERS
... If the different types of pairing found were produced by efficiency or activity differences between chromosomes, this would imply, in our case, that, if in a diploid plant one c[r] ...
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A PROOF THAT CROSSING OVER INVOLVES AN EXCHANGE OF SEGMENTS BETWEEN HOMOLOGOUS CHROMOSOMES
... If a plant is made heterozygous for the two translocations and for two or more genes in the interstitial segment of the doubly modified chromosome and then back- crosse[r] ...
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PAIRING COMPETITION BETWEEN IDENTICAL AND HOMOLOGOUS CHROMOSOMES IN AUTOTETRAPLOID RYE. I. SUBMETACENTRIC CHROMOSOMES
... Meiotic pairing preferences between identical and homologous but not iden- tical chromosomes were analyzed in ten induced tetraploid/diploid chimaera1 rye plants (Secale c[r] ...
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Expansion and contraction of the nucleolus organizer region of Neurospora: changes originate in both proximal and distal segments.
... Meiotic recombination between rDNA located on homologous chromosomes has not been observed in Neurospora (RUSSELL, PETERSEN and WAGNER 1988), but it seemed possible [r] ...
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THE GENETIC STRUCTURE OF NATURAL POPULATIONS OF DROSOPHILA MELANOGASTER. X. DEVELOPMENTAL TIME AND VIABILITY
... In the coupling heterozygotes (in which mutant polygenes are located in only one of the originally identical normal homologous chromosomes), developmental time was shorter than [r] ...
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GR Ch. 13 Meiosis.pdf
... Add these labels: parent cell, mitosis, meiosis, synapsis, homologous chromosomes, replicated chromosomes, sister chromatids, daughter cells, meiosis I, meiosis II, and crossing over.[r] ...
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A Multivalent Pairing Model of Linkage Analysis in Autotetraploids
... of homologous chromosomes at meiosis and can provide a simultaneous maximum-likelihood estimation of the double reduction frequencies of and recombination fraction between two ...
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PROPHASE CHROMOSOME BEHAVIOR IN TRIPLOID INDIVIDUALS OF DROSOPHILA MELANOGASTER
... An examination of this material has shown that here also homologous chromosomes are not only associated in metaphase (cf. figure 4, and also figures in a forthcoming paper[r] ...
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Pairing-Dependent Mislocalization of a Drosophila brown Gene Reporter to a Heterochromatic Environment
... of homologous chromosomes, followed by recruitment of the paired bw locus into a heterochromatic compartment of the nucleus, where the bw gene cannot be expressed (Csink and Henikoff ...
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A conditional allele of the Saccharomyces cerevisiae HOP1 gene is suppressed by overexpression of two other meiosis-specific genes: RED1 and REC104.
... The HOPI gene of Saccharomyces cerevisiae is believed to encode a protein component of the synaptonemal complex, the structure formed when homologous chromosomes syn[r] ...
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An implanted recombination hot spot stimulates recombination and enhances sister chromatid cohesion of heterologous YACs during yeast meiosis.
... Unique features of meiotic chromosome behavior are extensive pairing of homologous chromosomes, a high frequency of recombination, and an orderly “reduc- tional” disjunction [r] ...
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Yeast mer1 mutants display reduced levels of meiotic recombination.
... Both inter- and intrachromosomal recombination are reduced, indicating that the MERI gene product is required for recombination between and within homologous chromosomes.. [r] ...
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Chromatin Structure and Differential Accessibility of Homologous Human Mitotic Metaphase Chromosomes
... homologous chromosomes represents a transition between parental and daughter cell epigenetic states. Histone marks and chromatin binding proteins may potentiate some genomic loci to maintain a less ...
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Biology Ch 10 Notes.pdf
... Chromosomes and Chromosome Number *Human body cells have 46 chromosomes *Each parent contributes 23 chromosomes *Homologous chromosomes — one of two paired chromosomes, one from each p[r] ...
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THE ACTION OF ALLELIC FORMS OF THE GENE A IN MAIZE. IV. ON THE COMPOUND NATURE OF Ab AND THE OCCURRENCE AND ACTION OF ITS Ad DERIVATIVES
... Classical genetic investigations have identified localized differences through- out the length of homologous chromosomes. Since the existence of a gene is first established onl[r] ...
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INDUCED CHANGES IN FEMALE GERM CELLS OF DROSOPHILA. IV. DEPENDENCE OF INDUCED CROSSOVER-LIKE EXCHANGES IN OOCYTES AND OOGONIA UPON X-RAY INTENSITY
... Contribution No.. eggs first laid, exchanges between homologous chromosomes which would appear to be crossovers but which would be, in reality, pseudocrossovers or half-translocation[r] ...
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STATISTICAL ANALYSIS OF CHROMOSOME PAIRING IN INTERSPECIFIC HYBRIDS. II. APPLICATIONS TO SOME NICOTIANA HYBRIDS
... If all chromosomes of one parent of the hybrid can pair with homologous chromosomes of the other parent and the probabilities of pairing are equal for all the chromosomes, th[r] ...
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CHROMOSOMAL TRANSLOCATIONS GENERATED BY HIGH-FREQUENCY MEIOTIC RECOMBINATION BETWEEN REPEATED YEAST GENES
... Isogenic diploid strains were constructed with two different mutant uru3 genes at either allelic positions on homologous chromosomes or on nonho- mologous chromosom[r] ...
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