相关实验视频

Updated: Jul 14, 2026

Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging
06:44

Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging

Published on: April 28, 2021

二倍化和内复合细胞:DNA的测量方法

A G BELL

    Science (New York, N.Y.)
    |January 10, 1964
    PubMed
    概括

    在人体白细胞中,经X射线照射后,Endoreduplicated细胞含有正常双胞胎细胞的DNA的两倍. 这证实了内核复制细胞是一种多倍化形式.

    关键词:
    染色体是什么 染色体是什么它们是DNA DNA DNA DNA.实验室研究实验室研究白血细胞 白血细胞.谱光光度学是一种光谱光度学.

    更多相关视频

    Measuring Single-Cell Mitochondrial DNA Copy Number and Heteroplasmy Using Digital Droplet Polymerase Chain Reaction09:15

    Measuring Single-Cell Mitochondrial DNA Copy Number and Heteroplasmy Using Digital Droplet Polymerase Chain Reaction

    Published on: July 12, 2022

    Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy10:57

    Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy

    Published on: November 11, 2025

    相关概念视频

    Karyotyping01:17

    Karyotyping

    Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
    Replication in Eukaryotes02:31

    Replication in Eukaryotes

    Overview
    Chromosome Structure02:40

    Chromosome Structure

    A functional eukaryotic chromosome must contain three elements: a centromere, telomeres, and numerous origins of replication.
    The centromere is a DNA sequence that links sister chromatids. This is also where kinetochores, protein complexes to which spindle microtubules attach, are constructed after the chromosome is replicated. The kinetochores allow the spindle microtubules to move the chromosomes within the cell during cell division.
    Telomeres consist of non-coding repetitive nucleotide...
    Polytene Chromosomes02:04

    Polytene Chromosomes

    Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also regularly...
    Meiosis vs. Mitosis02:57

    Meiosis vs. Mitosis

    Cell division is necessary for growth and reproduction in organisms. Mitosis aids cell growth and development by dividing somatic cells. In contrast, meiosis causes the division of germ cells and plays an essential role in sexual reproduction. Due to their unique functional requirements, mitosis and meiosis differ from each other in multiple aspects.
    Before the start of mitosis and meiosis I, the cell synthesizes DNA, resulting in two homologous copies of each chromosome. DNA synthesis is...
    Replication in Eukaryotes01:29

    Replication in Eukaryotes

    In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
    Many Proteins Orchestrate Replication at the Origin
    Eukaryotic replication follows many of the same...