EPISODE · Aug 5, 2025 · 7 MIN
2025 biology talkshow: 植物多倍體與新種形成 (選修生物4)
from 雷比特生物空中講 · host 雷比特老師
解釋植物多倍體化如何促進新物種的形成，這是一種細胞內染色體組數量增加的現象。它區分兩種主要類型：同源多倍體和異源多倍體。同源多倍體源自單一物種內部染色體加倍，導致後代與原親代產生生殖隔離，因為它們之間雜交會產生不育的三倍體。而異源多倍體則是由兩個不同物種雜交後，其雜交後代的染色體組再加倍所形成，這使得新物種能夠成功繁殖，同時也與其雙親物種產生生殖隔離。這些機制在植物演化中扮演著關鍵角色，創造出新的、具備獨特特性的物種，例如栽培小麥和馬鈴薯。 聽完後可以自主進行線上測驗，檢視學習成效喔~(需要登入gemini) 測驗網址 https://g.co/gemini/share/5f8084190b7e Powered by Firstory Hosting
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2025 biology talkshow: 植物多倍體與新種形成 (選修生物4)
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