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en.wikipedia.org/wiki/Chromosomal_crossover

Chromosomal crossover (or crossing over) is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes during sexual reproduction. It is one of the final phases of genetic recombination, which occurs in the pachytene stage of prophase I of meiosis ... Furthermore, crossing over has been correlated to occur in response to ...

www.answers.com/Q/Which_phase_of_meiosis_occurs_right_after_crossing_over_takes_place

In meiosis, the precursor cells of the sperm or ova must multiply and at the same time reduce the number of chromosomes to one full set. During the early stages ...

www.khanacademy.org/science/biology/cellular-molecular-biology/meiosis/a/phases-of-meiosis

How meiosis reduces chromosome number by half: crossing over, meiosis I, ... Since cell division occurs twice during meiosis, one starting cell can produce four ... After crossing over, the spindle begins to capture chromosomes and move them ... the purple version of the little chromosome happen to be positioned towards ...

highered.mheducation.com/sites/0072437316/student_view0/chapter12/answers_to_text_questions.html

After chromosome replication and during synapsis, a). homologous chromosomes ... During which stage of meiosis does crossing over occur? a). prophase I

www.encyclopedia.com/science-and-technology/biology-and-genetics/genetics-and-genetic-engineering/crossing-over

Get information, facts, and pictures about crossing over at Encyclopedia.com. ... found on each chromosome, and this sets the stage for crossing over. ... Thus, following crossing over, at least two of the four chromatids become unique, unlike ... Crossing over is estimated to occur approximately fifty-five times in meiosis in ...

www.macroevolution.net/prophase-i.html

During prophase I, the first stage of meiosis, chromosome homolog pairs unite to ... So crossing-over between both of the synapsed chromatid pairs does occur. ... of meiosis, the nuclear envelope (shown in white in the diagram at right) breaks up and ... After crossing over, it could contain genes for blue eyes and brown hair,  ...

biology.stackexchange.com/questions/875/at-what-stage-of-meiosis-does-first-meiotic-arrest-of-oogenesis-occur

Feb 1, 2012 ... Then, the primary oocytes start to undergo meiosis I - but meiosis I is ... Therefore, the answer to your question will be - the first meiotic arrest in oogenesis will occur from the time the primary ... The prophase is subdivided to following stages: ... Pachytene (crossing over); Diplotene (chromosomes separate a ...

www2.estrellamountain.edu/faculty/farabee/biobk/BioBookmeiosis.html

Meiosis | Ploidy | Life Cycles | Phases of Meiosis | Prophase I | Metaphase I ... diploid, germ line diploid cells will undergo meiosis to produce gametes, with fertilization closely following meiosis. ... Crossing-over may occur at this point. .... Text ©1992, 1994, 1997, 1998, 2000, 2001, 2007, by M.J. Farabee, all rights reserved.

www.cliffsnotes.com/study-guides/biology/biology/meiosis-and-gamete-formation/meiosis

Synapsis and crossing over occur in the prophase I stage. ... Cytokinesis occurs immediately following telophase I. This process occurs differently in plant and ...