OPERATION_SURFING2020HK Telegram 153
Erbfeindschaft
我有23條chromosome 嚟自我阿爸,有23條嚟自我阿媽, 假如我雙親都做咗嗰個Covid-19 testing , 政府係咪就可以analyze到我成set DNA?
【Full explanation】[好失望竟然有6成答錯]
首先你要知道你老豆啲精子唔系條條一樣,你老母的卵子都唔系粒粒一樣,appearance may be the same, but the genetic makeup is different ,sperm 同egg cells 我地統一叫做gametes 😚

Gamete cells 不同於 somatic cells ,former 衹有 23條chromosomes (so called haploid), latter 有46條 chromosomes ( so called diploid ) , haploid cell 嗰23 條 chromosomes 由 gametes producing cell 取材 , 每一set裏面二揀一 , 所以單計single individual 就可以產生到 2^(23) =8,388,608 不同基因嘅gametes , 計埋你另一個parent 我要將呢個數再二次方, 所以total 就會有 70,368,744,177,664 種combination, 呢一個過程我哋叫做 independent segregation 😄

加上仲有樣嘢叫做 Random fertilization, 即係冇人會知道究竟你阿爸係邊條精撞到你阿媽邊粒卵😳

最後仲有樣嘢叫做crossing over, after fertilization, zygote is formed 嗰陣 parental chromosome 有機會手拖手再交換咗一小節 chromatid (圖示), 從而產生咗新嘅 genetic makeup 🙂

呢三樣嘢都會contribute to genetic variations, 從而確保物種嘅演化, 如果呢題問題 答案真係True的話, 人類可能已經滅絕咗🤣🤣
#Biology



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【Full explanation】[好失望竟然有6成答錯]
首先你要知道你老豆啲精子唔系條條一樣,你老母的卵子都唔系粒粒一樣,appearance may be the same, but the genetic makeup is different ,sperm 同egg cells 我地統一叫做gametes 😚

Gamete cells 不同於 somatic cells ,former 衹有 23條chromosomes (so called haploid), latter 有46條 chromosomes ( so called diploid ) , haploid cell 嗰23 條 chromosomes 由 gametes producing cell 取材 , 每一set裏面二揀一 , 所以單計single individual 就可以產生到 2^(23) =8,388,608 不同基因嘅gametes , 計埋你另一個parent 我要將呢個數再二次方, 所以total 就會有 70,368,744,177,664 種combination, 呢一個過程我哋叫做 independent segregation 😄

加上仲有樣嘢叫做 Random fertilization, 即係冇人會知道究竟你阿爸係邊條精撞到你阿媽邊粒卵😳

最後仲有樣嘢叫做crossing over, after fertilization, zygote is formed 嗰陣 parental chromosome 有機會手拖手再交換咗一小節 chromatid (圖示), 從而產生咗新嘅 genetic makeup 🙂

呢三樣嘢都會contribute to genetic variations, 從而確保物種嘅演化, 如果呢題問題 答案真係True的話, 人類可能已經滅絕咗🤣🤣
#Biology

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