科普專欄–薯不揀單 - 三十秒科學–染色體自成一閣

我們身體細胞的DNA，會經過不同蛋白質的幫助下接疊以及壓縮，成為名為染色體(Chromosome)的結構。519Please respect copyright.ＰＥＮＡＮＡ1eGazoKKna
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而這些染色體、亦即是DNA，將會收藏在細胞裡的細胞核。519Please respect copyright.ＰＥＮＡＮＡ9LrEJSwrIi
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（圖2）細胞進行自我複製時，將會複製自己的DNA，並會暫時性將細胞核的外膜消除。519Please respect copyright.ＰＥＮＡＮＡso4isuzWBc
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被複製的DNA會排在中間，然後經由線狀結構(綠色)往左右兩方邁進。519Please respect copyright.ＰＥＮＡＮＡz4PRdBr3OH
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（圖3）往左右兩方邁進的染色體，有時候會出現跑得較為慢的染色體(圖中藍色箭嘴)。519Please respect copyright.ＰＥＮＡＮＡPtSgDqnn7k
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落後於人的染色體，最終有機會無法加入正常大隊，並自立一閣形成名為micronucleus的結構。519Please respect copyright.ＰＥＮＡＮＡYAhnD12jAh
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（圖4）這些名為micronucleus的結構，基於其外膜的發展並不完善，因此非常容易會出現損壞的情況。519Please respect copyright.ＰＥＮＡＮＡTVsDsNN95V
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當外膜受到損毀，裡頭的DNA有極大機會遭受襲擊，因此出現變異的情況。519Please respect copyright.ＰＥＮＡＮＡzXQ73HCnhY
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而這些變異的DNA，往往就是讓正常細胞發展成為癌細胞的契機。519Please respect copyright.ＰＥＮＡＮＡrYKUA1OdkK
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如果想我快啲出文的話，請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark，這對我非常之重要。519Please respect copyright.ＰＥＮＡＮＡL1ugu3cDYr
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Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc519Please respect copyright.ＰＥＮＡＮＡGbed1D88rW
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同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」，以課金的方式推動我繼續搜羅資料寫文，多謝。519Please respect copyright.ＰＥＮＡＮＡnxNE7zPsOq
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https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio519Please respect copyright.ＰＥＮＡＮＡcQ2rrNSfEE
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除非Facebook及IG重開侵侵的account，否則我的IG將不會再作更新，只會寄居本土LIHKG及Penana。519Please respect copyright.ＰＥＮＡＮＡsoasfGTfsI
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Ref1:https://www.nature.com/articles/s41586-021-03417-2519Please respect copyright.ＰＥＮＡＮＡKGZlPYlW93

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