段考練習1
Quiz
•
Biology
•
7th Grade
•
Hard
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
丁丁的父親能捲舌,其基因型為RR,母親不能捲舌,其基因型為rr,若丁丁的太太小波也不能捲舌,則丁丁夫婦所生的第一個子女是男生又能捲舌的機率為何?
1/8
3/4
1/2
1/4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
假設控制雞冠形狀的某一對基因中,玫瑰冠對單冠為顯性,以R表示顯性等位基因,r表示隱性等位基因。在某研究中,一隻玫瑰冠公雞甲分別與三隻母雞乙、丙、丁交配後,生下的三群小雞中,每群都任意選擇一隻小雞,記錄性狀表徵,如附圖所示。在不考慮突變的情況下,由此圖推測親代的基因型,下列哪一親代的基因型仍無法確定?
甲
乙
丙
丁
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附圖為某生物生殖母細胞的染色體示意圖,則該細胞經歷三次細胞分裂、一次減數分裂後,共產生幾個子細胞?子細胞中有幾條染色體?
(A)32個子細胞、3條染色體
(B)16個子細胞、3條染色體
(C)16個子細胞、6條染色體
(D)32個子細胞、6條染色體。
32個子細胞、3條染色體
16個子細胞、3條染色體
16個子細胞、6條染色體
32個子細胞、6條染色體
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附圖為減數分裂過程中,各階段的染色體變化示意圖。若依先後順序排列應為何?
甲乙丙丁
甲丙乙丁
甲丁乙丙
丙乙甲丁
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
人類的血型是由IA、IB和i三種等位基因所控制。其中IA、IB為顯性等位基因,i為隱性等位基因,血型和其基因型的關係如附表所示。若阿宏的血型為B型,其太太小美為A型,且兩人已生下一個A型男孩和一個B型女孩,則下列推論何者錯誤?
小美的基因型為IAi
阿宏的基因型為IBIB
第三個孩子為O型的機率為1/4
第三個孩子為AB型女孩的機率為1/8
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
附圖為某生物生殖母細胞內染色體及遺傳因子,則此細胞行減數分裂所得的子細胞中,可能同時具有哪些遺傳因子?
A、C、a
a、b、c
B、C、c
B、a、c
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(甲)出芽生殖;(乙)營養器官繁殖;(丙)經植物組織培養;(丁)生殖器官繁殖。農民或從事園藝的人為了使植物子代能保存親代的優良品種,經常使用上述哪些方法來繁殖?
甲乙丙
甲丁
乙丙
乙丁
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