
7.2.5 生物的變異_練習
Authored by 林嘉明 LAM KA MENG
Biology
9th Grade
Used 3+ times

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1.
DRAG AND DROP QUESTION
30 sec • 1 pt
1.生物變異的特點及類型
(1)生物性狀的變異是普遍存在的。生物性狀的差異除受 (a) 的影響外,同時也受 (b) 的影響。
2.
DRAG AND DROP QUESTION
30 sec • 1 pt
(2)可遺傳的變異:由 (a)
的變化引起的變異, (b) (填“會”或“不會”)遺傳給下一代,如色盲、白化病、轉基因超級鼠、太空椒等。
3.
DRAG AND DROP QUESTION
30 sec • 1 pt
(3)不可遺傳的變異:由 (a) 因素引起的變異,體內的遺傳物質 (b) 發生改變, (c) (填“會”或“不會”)遺傳給後代;如整容、曬黑、水肥充足莊稼的果穗飽滿等。
4.
DRAG AND DROP QUESTION
30 sec • 1 pt
2.遺傳變異育種在實踐上的應用
(1)應用原理:人工選擇了有利變異,屬於選擇育種;利用基因在親子代之間的傳遞,使基因重組,產生穩定的、可以遺傳的、具有優良性狀的新品種,屬於雜交育種;利用太空射線誘導普通甜椒種子發生了變異,屬於誘變育種,這些都是培育新品種的方法。
(2) (a) 培育:從產奶量不同的奶牛中選擇、繁育出高產奶牛。
(3) (b) 育種:用高產倒伏小麥與低產抗倒伏小麥培育出高產抗倒伏小麥。
(4)誘變育種:普通甜椒的種子經過衛星搭載後, (c) 發生改變,播種後產出太空椒。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3.下列生物的生殖過程中,能發生可遺傳變異的是( )。
選擇培育的太空椒
馬鈴薯用塊莖繁殖
組織培養的蝴蝶蘭
草莓用葡萄枝繁殖
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4.下列幾種變異中,能夠遺傳的是( )。
長期在室外工作的人的皮膚變黑
水肥充足,水稻就穗大粒多
單眼皮經手術變成雙眼皮
近親結婚導致的血友病
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5.下列關於遺傳與變異的敘述中,錯誤的一項是( )
顯性性狀可以表現出來
隱性性狀無法表現出來
基因組成相同,性狀不一定相同
生物的變異分為可遺傳和不可遺傳的變異
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