You may do so in any reasonable manner, but not in. Recombinacion genetica conceptos basicos 1 youtube. Maternal origin of trisomy occurs in approximately 90% of. Libro biologia pages 51 100 text version fliphtml5. This occurs during the creation of an egg or sperm for the next generation. Thank you for visiting our website and your interest in our free products and services.
Multiple correspondence analysis was used to outline different groups and their associations. Recombination is the exchange of dna segments between the two copies of a chromosome maternally inherited and paternally inherited. This file is licensed under the creative commons attributionshare alike 3. In step 3, this free 3terminal end is homologously paired with its homologue by a recalike protein to form an intermediate known as a joint molecule. Mitotic recombination is a type of genetic recombination that may occur in somatic cells during their preparation for mitosis in both sexual and asexual organisms. Meiosis is a specialised type of cell division, the principal function of which is to produce sporesgametes sperm and eggs in mammals that have the haploid number of chromosomes.
We are nonprofit website to share and download documents. Free trisomy 21 is responsible for 95% of down syndrome cases. Files are available under licenses specified on their description page. Following joint molecule formation, pairing of the displaced complementary strands results in the formation of characteristic intermediates known as.
Understanding and manipulating meiotic recombination in plants. Nelson javier ramirez, 1, helen marcela belalcazar, 1, juan jose yunis 1, 2, luis napoleon quintero 1, 3, gonzalo humberto arboleda 1, 2, humberto arboleda 1, 3. Guia practica meiosis y gametogenesis anual biologia ejercicios psu ciencias basicas 1. Microsatellite polymorphisms were used as dna markers to determine the parentalstage origin of nondisjunction and recombination events.
Nonparametric tests were used to compare our results with those reported. The work presents the results of the service in the periodshowing data related to the number and distribution of workers monitored for areas. Discover everything scribd has to offer, including books and audiobooks from major publishers. You can publish your book online for free in a few minutes. Maternal origin of trisomy occurs in approximately 90% of cases. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. All structured data from the file and property namespaces is available under the creative commons cc0 license. Parental origin, nondisjunction, and recombination of the extra chromosome 21 in down syndrome. Advanced maternal age and susceptible recombination patterns are recognized risk factors associated to down syndrome. Parental origin, nondisjunction, and recombination of the. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses. Download as ppt, pdf, txt or read online from scribd.
Guia practica 8 meiosis y gametogenesis free download pdf ebook. An ebook reader can be a software application for use on a computer such as microsofts free reader application, or a booksized computer that is used solely as a reading device such as nuvomedias rocket ebook. In asexual organisms, the study of mitotic recombination is one way to understand genetic linkage because it is the only source of recombination within an individual. The quality assurance in establishment that use ionizing radiation sources, is according to atnicodon recommendations of radiation protection programs.
Entrecruzamento cromosomico wikipedia, a enciclopedia libre. Meiosis consists of two rounds of chromosome segregation, in which homologous chromosomes separate during meiosis i and sister chromatids further separate during meiosis ii fig. To the running of this website, we need your help to support us. Assumptionfree estimation of heritability from genomewide identitybydescent. Evolucion recombinacion meiotica cinvestav unidad irapuato. Each chromosome is cut at the same location, usually at one or two random spots crossover points, and dna segments are swapped between the two copies. An ebook reader can be a software application for use on a computer such as microsofts free reader application, or a booksized computer this is used solely as a reading device such as nuvomedias rocket ebook. Aug 01, 2017 thank you for visiting our website and your interest in our free products and services. The accurate segregation of homologous chromosomes requires meiotic recombination that is initiated by the formation of dna doublestrand. Recombinacion genetica by alezsitha lovegood on prezi.
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