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centromere    
着丝点

着丝点

centromere
n 1: a specialized condensed region of each chromosome that
appears during mitosis where the chromatids are held
together to form an X shape; "the centromere is difficult
to sequence" [synonym: {centromere}, {kinetochore}]


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  • Centromere - Wikipedia
    The centromere links a pair of sister chromatids together during cell division This constricted region of chromosome connects the sister chromatids, creating a short arm (p) and a long arm (q) on the chromatids
  • Centromere - Definition, Function and Types - Biology Dictionary
    Centromere Definition The centromere is the point on a chromosome where mitotic spindle fibers attach to pull sister chromatids apart during cell division When a cell seeks to reproduce itself, it must first make a complete copy of each of its chromosomes, to ensure that their daughter cell receives a full complement of the parent cell’s DNA
  • Centromere - National Human Genome Research Institute
    The centromere appears as a constricted region of a chromosome and plays a key role in helping the cell divide up its DNA during division (mitosis and meiosis) Specifically, it is the region where the cell’s spindle fibers attach
  • Centromere | chromosome, DNA, replication | Britannica
    Centromere, structure in a chromosome that holds together the two chromatids (the daughter strands of a replicated chromosome) The centromere is the point of attachment of the kinetochore, a structure to which the microtubules of the mitotic spindle become anchored
  • Centromere Structure and Function - PMC - PubMed Central (PMC)
    The centromere is the genetic locus that specifies the site of kinetochore assembly, where the chromosome will attach to the kinetochore microtubule The pericentromere is the physical region responsible for the geometry of bi-oriented sister kinetochores in metaphase
  • Structure, Functions and Types of Centromeres - GeeksforGeeks
    A centromere is a constricted region of a chromosome that splits the whole chromosome during cell division It keeps the two arms of the chromosome together and splits the whole chromosome into a short part (p) and a long part (q)
  • Centromere - Definition and Examples - Biology Online Dictionary
    A centromere is the dense and constricted region of a chromosome It is where the sister chromatids attach after DNA replication and kinetochore assembly (for spindle fiber attachment) take place before mitosis It contains highly specialized repetitive DNA sequences (e g satellite DNA) of a chromosome linking sister chromatids forming a dyad
  • What Is the Role of the Centromere During Cell Division?
    Explore the centromere's role in cell division, from chromosome alignment to segregation, and understand its impact on genetic stability Cell division ensures genetic material is accurately passed from one generation of cells to the next





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