Found: Missing sequence of the human Y chromosome
...uence: a 554-kilobase-pair genomicsegment near the
centromere of the human Y chromosome. This sequencecontains eight putatively active genes that could be implicated insex-associated height differences and gonadal tumor development. Thispericentromeric gap was one of the few holes remaining in the"finished" se...
15-year hunt finds cause of pseudothalidomide syndrome
...ce lined up, tiny molecular "motors" attach to the
centromere of each copy and pull the original and the new copy away from each another as division proceeds. However, in cells from people with Roberts syndrome, the chromosome copies are frequently not attached to each other at their centromeres and the chromo...
Regulating the nuclear architecture of the cell
...ell can replicate. Heterochromatin also flanks the
centromere in the central region of the chromosome, the chromatin structure that plays a crucial role in chromosome segregation during cell division. What other functions abundant heterochromatin may perform are still an open question. Even epigenetics ulti...
Exploring the dark matter of the genome
...res. In a typically bow-tie-shaped chromosome, the
centromere is the knot. Centromeres play a crucial role in co...d of the chromosomes to the other -- including the
centromere in the middle." Obtaining a more complete picture of the sequence of heterochromatin is clearly a cr...
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Rice Centromere, Supposedly Quiet Genetic Domain, Surprises
... significant step," says Jiang. "This is the first
centromere to be sequenced at this level for any higher organism." The
centromere of rice, says Jiang, lent itself to sequencing because, unlike centromeres from other organisms, it ...
centromere at Biology Definition
Trait
...mportant reference point along this string is the
centromere ; the distance from a gene to the
centromere is referred to as the gene's locus or map location. A chromosomal region known to control a trait ...
Mitosis
...NA element present on every chromosome called the
centromere . A protein called cohesin acts as a glue joining two sister chromosomes (a.k.a. sister chromatids) along their lengths. When chromosomes are paired up and attached, each individual chromosome in the pair is called a chromatid , while the whole uni...
Prophase
...NA element present on every chromosome called the
centromere . When chromosomes are paired up and attached, each individual chromosome in the pair is called a chromatid , while the whole unit (confusingly) is called a chromosome. Somewhat confusingly, when the chromatids separate, they are no longer called...
Mitotic spindle
...attach to the kinetochores that assemble on the
centromere portion of the chromosomes and then pull the chromosomes into alignment along the center of the spindle. Once all the chromosomes are aligned with sister chromatids pointing to opposite ends of the spindle, the sister chromatids separate an...
Mitosis
...NA element present on every chromosome called the
centromere . A protein called cohesin acts as a glue joining two sister chromosomes (a.k.a. sister chromatids) along their lengths. When chromosomes are paired up and attached, each individual chromosome in the pair is called a chromatid , while the whole uni...
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centromere at Biology Dictionary
Vector
... such as origin of replication , telomere s and
centromere (in eukaryotes ). Full article >>> To analyze splicing in vitro, a plasmid vector was prepared that contained the intron and parts of the exons downstream of a phage RNA polymerase promoter . Full article >>...
Transverse
... produced during mitosis or meiosis when the
centromere splits transverse ly instead of longitudinally; the arms of such chromosome are equal in length and genetically identical, however, ... Full article >>>...
Trait
...her. The arms of a given chromosome join at its
centromere . Full article >>> The observable ...#62;> chromosome pairs of the same length
centromere position, and staining pattern that possess genes for the same trait s at corresponding loci . On...
Telophase
...irst meiotic division effectively ends when the
centromere s arrive at the poles. Each daughter cell now has half the number of chromosomes but each chromosome consists of a pair of chromatid s. Full article >>> Telophase The last stage (Gk. telos, end) of mitosis , or of either div...
Telomere
... such as origin of replication , telomere s and
centromere (in eukaryotes ). Full article >>> ...nds are called telomere s. The positions of the
centromere s are used to broadly class ify chromosomes into three morphological groups: acrocentric (const...
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