Definition von crossing-over im Englisch Englisch wörterbuch
When second year Webelos graduate to Boy Scouts, a ceremony is given by a local Boy Scout Troop's Order of the Arrow during which the boy crosses-over from Cub Scouts to Boy Scouts This always takes place at our Blue & Gold Banquet in February
A term introduced by Morgan and E Cattell, in 1912, to describe the process of reciprocal chromosomal interchange by which recombinants arise
The exchange of DNA sequences between chromatids of homologous chromosomes during meiosis
Change places with the person opposite you If not instructed otherwise pass by the right shoulder, taking a slightly curved route to the other side of the set
The move of a checker from one quadrant of the board to an adjacent quadrant One of the future moves from one quadrant to the next that a checker must make to reach its home board
Four planks approximately 12ft long Width 10 ins minimum 12ins maximum secured fixed to a metal table frame 4ft high with a top 2ft 8ins square The obstacle may be used with two or more planks but must be of stable construction The last 3ft from the bottom of each ramp should be a different colour to indicate the area with which the dog should make contact Each ramp to have a non-slip surface, and anti-slip slats at intervals but not within 6ins of the start of a contact area
Where a section of one chromosome switches places with the same section from the other chromosome of the pair This sometimes occurs when a germ cell makes copies of its chromosomes before dividing
互æ›, The breaking during meiosis of one maternal and one paternal chromosome, the exchange of corresponding sections of DNA, and the rejoining of the chromosomes This process can result in an exchange of alleles between chromosomes Compare recombination
A process in which homologous chromosomes exchange parts normally reciprocally but sometimes unequally The exchange of corresponding chromosome parts between homologues by breakage and reunion of DNA molecules normally during prophase I of meiosis but also occasionally during mitosis
The breaking during meiosis of one maternal and one paternal chromosome, the exchange of corresponding sections of DNA, and the rejoining of the chromosomes This process can result in an exchange of alleles between chromosomes See also: recombination
An event that occurs during meiosis During crossing over, alleles on homologous chromosomes can switch places This switching of alleles increases the number of possible combinations of alleles, and hence increases the variability of a genome In other words, crossing over contributes to the ability of two parents to produce offspring that are all very different Also referred to as 'recombination'
a phenomenon, also known as recombination, that sometimes occurs during the formation of sperm and egg cells (meiosis); a pair of chromosomes (one from the mother and the other from the father) break and trade segments with one another