One is red. noun. It results in the rearrangement of genes and produces variation in the inherited characteristics of the offspring. For an example of crossing over, you can think of two pieces of foot-long rope lying on a table, lined up next to each other. See more. crossing over - the interchange of sections between pairing homologous chromosomes during the prophase of meiosis crossover diplotene - the fourth stage of the prophase of meiosis All Free. Crossing over definition: the interchange of sections between pairing homologous chromosomes during the diplotene... | Meaning, pronunciation, translations and examples

Crossover definition, a bridge or other structure for crossing over a river, highway, etc. the interchange of sections between pairing homologous chromosomes during the diplotene stage of meiosis. crossing over - WordReference English dictionary, questions, discussion and forums. Crossing definition is - the act or action of crossing: such as. One is blue. DNA replicates via mitosis and meiosis. While the ropes are crossed, something interesting happens: a one-inch segment from one end of the red rope breaks off. A place at which a river, railroad, or highway, for example, may be crossed: a railroad crossing; a pedestrian crossing. During meiosis, an event known as chromosomal crossing over sometimes occurs as a part of recombination. Definition of crossing-over. biology. The American Heritage® … 2. a.

The intersection of the nave and transept in a cruciform church.


Crossing over. 4. A place at which roads, lines, or tracks intersect; an intersection. Now, cross one piece over the other to form an "X." crossing over in British English.

Psychology Definition of CROSSING OVER: with regard to genetics, reference: recombination. crossing-over (krô′sĭng-ō′vər) The exchange of genetic material between homologous chromosomes that occurs during meiosis and contributes to genetic variability.
biology. In prophase I, homologous chromosomes align lengthwise or pair with each other, and exchange of genetic material between the two chromosomes takes place, which is known as crossing over.

In simple terms, the crossing over definition equates to genetic recombination. 3. During replication, DNA segments can be swapped to form chromosomes with a new combination of genetic material. How to use crossing in a sentence. Chromosomes carry genetic material in the form of strands of DNA. The act or action of crossing. ♦ Crossing over is simply the exchange of genetic material between two homologous chromosomes to give rise to recombinant chromosomes. See also linkage (sense 4)

ing (krô′sĭng, krŏs′ĭng) n. 1. Each piece of rope represents a chromosome. : an interchange of genes or segments between homologous chromosomes. b. In this process, a region of one chromosome is exchanged for a region of another chromosome, thereby producing unique chromosomal combinations that further divide into haploid daughter cells. ‘Recently, theoretical models have been developed that incorporate both crossing over and gene conversion.’ ‘The frequency of aberrant chromosomes resulting from ectopic crossing over was decreased 6-fold.’ ‘In this organism crossing over between X and Y chromosomes was shown for the first time in vertebrates.’


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