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。237Please respect copyright.PENANAf7ebDBMqxL
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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。237Please respect copyright.PENANA8QgdW9B5sb
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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。237Please respect copyright.PENANAktxc1w6CKq
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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。237Please respect copyright.PENANACvATQsqkuj
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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)。237Please respect copyright.PENANAsGGxc8H7xx
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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。237Please respect copyright.PENANAEGWGG0MVyS
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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。237Please respect copyright.PENANANfyG91qsM4
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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。237Please respect copyright.PENANAvk8kaGizj9
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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。237Please respect copyright.PENANABD4e4Qj81r
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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。237Please respect copyright.PENANAGfFi3Ln5St
237Please respect copyright.PENANAedIfZUwIeG
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/toc237Please respect copyright.PENANABUZuzodDFi
237Please respect copyright.PENANA4hkoCs5wPx
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。237Please respect copyright.PENANAMOxKh5kSUW
237Please respect copyright.PENANAqsNRWpSXV0
Link:237Please respect copyright.PENANA1JCCtujhNJ
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio237Please respect copyright.PENANAegqeauN54C
237Please respect copyright.PENANAeHlsMbMWVi
237Please respect copyright.PENANAxEkhd4WNZY
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。237Please respect copyright.PENANA5P4d3hGGa6
237Please respect copyright.PENANARxQntbQnGA
Ref1:https://www.nature.com/articles/s41586-021-03417-2237Please respect copyright.PENANAipKr2NKeu8
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #200
三十秒科學–染色體自成一閣
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READS 233
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