関連する実験動画

Updated: Aug 5, 2026

2D and 3D Chromosome Painting in Malaria Mosquitoes
09:57

2D and 3D Chromosome Painting in Malaria Mosquitoes

Published on: January 6, 2014

染色体断片は,オンコペルトス (ヘミプテラ) の3世代に渡って伝達された

L E LaChance, M Degrugillier

    Science (New York, N.Y.)
    |October 10, 1969
    PubMed
    まとめ

    X線は乳虫の精子に染色体損傷を誘発し,子孫に不妊症を引き起こす. この損傷は世代を超えて持続し,彼らの染色体のユニークなホロキネティックな性質を確認しました.

    さらに関連する動画

    Preparing and Injecting Embryos of Culex Mosquitoes to Generate Null Mutations using CRISPR/Cas907:45

    Preparing and Injecting Embryos of Culex Mosquitoes to Generate Null Mutations using CRISPR/Cas9

    Published on: September 10, 2020

    Site-Directed φC31-Mediated Integration and Cassette Exchange in Anopheles Vectors of Malaria09:38

    Site-Directed φC31-Mediated Integration and Cassette Exchange in Anopheles Vectors of Malaria

    Published on: February 2, 2021

    関連する概念動画

    Crossing Over01:34

    Crossing Over

    Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
    The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process called synapsis.
    In order to...
    Position-effect Variegation02:32

    Position-effect Variegation

    In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
    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...
    Gene Conversion02:08

    Gene Conversion

    Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
    Genetic Variation01:25

    Genetic Variation

    Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
    Genes exist in different versions called alleles, which...