During mitosis and meiosis, the condensed chromosomes are assembled through interactions between nucleosomes and other regulatory proteins.

During meiosis, sex cell precursors have their number of chromosomes halved by randomly " choosing " one homologue, resulting in haploid gametes.

During meiosis, chromosomes assort randomly into gametes, such that the segregation of alleles of one gene is independent of alleles of another gene.

During meiosis, when germ cells divide to create sperm and egg ( gametes ), each half should have the same number of chromosomes.

During meiosis, there are two cell division steps that together produce the four daughter cells.

During meiosis, there are two chromosome separation steps which assure that each of the four daughter cells gets one copy of each of the 23 types of chromosome.

During mitosis or meiosis, the spindle checkpoint prevents anaphase onset until all chromosomes are properly attached to the spindle.

During meiosis, unstable repeats can undergo triplet expansion ( see later section ); in this case, the germ cells produced have a greater number of repeats than are found in the somatic tissues.

During mitosis ( or meiosis I or II ), the sister chromatid sets line up along the midline in metaphase.

During meiosis, homologous recombination can produce new combinations of genes as shown here between homologous chromosome | similar but not identical copies of human chromosome 1 ( human ) | chromosome 1.

During gametogenesis — the production of new gametes by an adult — the normal complement of 46 chromosomes needs to be halved to 23 to ensure that the resulting haploid gamete can join with another gamete to produce a diploid organism.

During prophase I, DNA is exchanged between homologous chromosomes in a process called homologous recombination.

During the diplotene stage, also known as diplonema, from Greek words meaning " two threads ", the synaptonemal complex degrades and homologous chromosomes separate from one another a little.

During the 1960s, Margaret Dayhoff and others at the National Biomedical Research Foundation assembled databases of homologous protein sequences for evolutionary study.

During the next decade, experiments in Drosophila, budding yeast and mammalian cells led to the emergence of other models of homologous recombination, called SDSA pathways, which do not always rely on Holliday junctions.

During this stage of the cell cycle this makes the individual chromosomes in many cells visible by optical microscope.

During cell division these chromosomes are duplicated in the process of DNA replication, providing each cell its own complete set of chromosomes.

During cell division these chromosomes are duplicated in the process of DNA replication, providing each cell its own complete set of chromosomes.

During cell division, enzymes that duplicate DNA cannot continue their duplication all the way to the end of chromosomes.

During the development of germ cells their genomes are demethylated, while chromosomes in the somatic cells retain the parental methylation patterns.

During metaphase, the chromosomes line up using the spindle apparatus in the middle of the cell along the equatorial plate.

During mitosis the double chromosomes are split to produce 92 " single chromosomes ", half of which go into each daughter cell.

During the queen's egg developing process, a diploid cell with 32 chromosomes divides to generate haploid cells called gametes with 16 chromosomes.

During the 1990s Thomas Cremer realized together with Peter Lichter the concept of comparative genomic hybridization to metaphase chromosomes and to a matrix with DNA spots representing specific genomic sites.

During mitosis, which occurs after chromosomes are duplicated during S phase, two sister chromatids are held together each with its own kinetochore which face in opposing directions and attach to opposite poles of the mitotic spindle.

During a Robertsonian translocation, the participating chromosomes break at their centromeres and the long arms fuse to form a single chromosome with a single centromere.

During cell division, the molecules that compose chromosomes ( DNA and proteins ) suffer a condensation process ( called the chromatin condensation ), and forms a compact and small complex called a chromatid.

During a session, a user is assigned to one pair of up-link and down-link frequency channels.

The ordination of a priest occurs before the Anaphora ( Eucharistic Prayer ) in order that he may on the same day take part in the celebration of the Eucharist: During the Great Entrance, the candidate for ordination carries the Aër ( chalice veil ) over his head ( rather than on his shoulder, as a deacon otherwise carries it then ) as a symbol of giving up his diaconate, and comes last in the procession and stands at the end of the pair of lines of the priests.

During that journey the pair met Mateli Kuivalatar in the small border town of Ilomantsi.

During these stages, two centrosomes, containing a pair of centrioles in animal cells, migrate to the two poles of the cell.

During these movements, some electrons collide with a gaseous molecule to form a pair of an ion and an electron ( Electron ionization ).

During the American Revolutionary War Charlottetown was raided in 1775 by a pair of American-employed privateers.

During the 1950s, theoretical condensed matter physicists arrived at a solid understanding of " conventional " superconductivity, through a pair of remarkable and important theories: the phenomenological Ginzburg-Landau theory ( 1950 ) and the microscopic BCS theory ( 1957 ).

During weddings of this period, a father would give his son-in-law a pair of shoes, to symbolize the transfer of authority.

During weddings of this period, a father would give his son-in-law a pair of shoes, to symbolize the transfer of authority.

During the process, the female supports the male by keeping him clasped with the claws of her last pair of legs.

During his forced break from Rambova, the pair began working ( separately ) on the Mathis-penned The Young Rajah.

During this year, Haley — without the Comets — recorded a pair of demos in Phoenix, Arizona: a country-western song called " Jealous Heart " for which he was backed by a local mariachi band ( and similar in style to the earlier " Jimmy Martinez ", and late-60s-style rocker called " Rock on Baby " backed by a group called Superfine Dandelion.

During the Brain Salad Surgery tour, at the end of the show, a sequencer in the Moog Modular synthesiser was set running at an increasing rate, with the Moog Synthesiser pivoting to face the audience while a large pair of silver bat wings was deployed at the back of the synthesiser.

During foraging times, the young cubs are left with a pair of babysitters, similar to Meerkats.

During the recording process, the tape moved through a pair of electrodes which immediately imprinted the modulated sound signals as visible black stripes into the paper tape's surface.

During this time, Louis XI did all he could to prevent the marriage, demanding that the Pope refuse to give a dispensation for the marriage ( the pair were cousins in the fourth degree ), promising trade favours to the English, undermining Edward's credit with the international bankers to prevent him being able to pay for Margaret's dowry, encouraging a Lancastrian invasion of Wales, and slandering Margaret, claiming that she was not a virgin and had borne a bastard son.

During the Nineteenth dynasty Hapi is often depicted as a pair of figures, each holding and tying together the long stem of two plants representing Upper and Lower Egypt, symbolically binding the two halves of the country around a hieroglyph meaning " union ".

During the height of their popularity in the 1940s, Warner Bros .' s Looney Tunes / Merrie Melodies animation unit produced 3 cartoons featuring the pair as cats or mice named " Babbit and Catstello ".

During an apparently suicidal confrontation with a pair of trigger-happy cops, the crew are teleported directly from Magrathea into the future to the Restaurant at the End of the Universe to find that, in fact, they haven't traveled an inch.

During this period, in which the band could not release their own music owing to the legal dispute with Rhythm King, the pair undertook remix work for React 2 Rhythm, ICP, Supereal, Inner City, Sunscreem, Ultra Nate and provided two remixes to David Bowie's single Jump They Say.

During the return to New York from this expedition, Beebe continued to dredge animals from the sea, using a pair of new devices he had devised to assist himself with this: a " pulpit ", an iron cage affixed to the bow of the ship that enabled its occupant to examine the surface of the sea more closely ; and a " boom walk ", a boom jutting from the side of the ship from which he suspended himself.

During courtship, the pair may pass a flower petal or insect back and forth repeatedly.

During the breeding season, Pied Currawongs will pair up and become territorial, defending both nesting and feeding areas.

During the breeding season, the South American lungfish develops a pair of feathery appendages that are actually highly modified pelvic fins.