
南一國中自然1下_ch2-2
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Medium
南一 自然
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關遺傳因子/等位基因的敘述,何者正確?
遺傳因子由孟德爾所提出
成對的等位基因位於同一條染色體上
人類的成熟紅血球具有46個成對的等位基因
人類的卵具有23個不成對的等位基因
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
海綿寶寶取了基因型為aa的落地生根葉片(甲),利用甲葉片產生新個體(乙);乙個體在春天時和基因型為AA的植株授粉,並產生了種子(丙),請問乙和丙的基因型依序為何?
Aa、Aa
此細胞有6個遺傳因子Aa、aa
aa、Aa
aa、AA
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
豌豆圓形種子(RR)與皺縮種子(rr)雜交,所得第一子代全部圓形,第二子代的基因型與比例分別為何?
1種,1:0
2種,1:1
2種,2:1
3種,1:1:2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於性狀、基因和染色體,以下何者正確?
性狀是指可遺傳的特徵,如:羽毛、雞冠、眼睛等
一種性狀通常由一對等位基因控制
一對染色體通常承載一對等位基因
各細胞的染色體承載著不同的等位基因,因此各個細胞可以表現各自的不同
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
假設人類的臉頰細胞中具有2個可以控制是否有酒窩的等位基因,智凱是一個健康的國一男生,請問智凱的口腔皮膜細胞內有幾個可以控制是否有酒窩的等位基因?
0個
1個
2個
23個
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
假設謝先生有酒窩,基因型為Aa。下列敘述何者有誤?
決定酒窩性狀的基因位於細胞核內
謝先生的孩子有可能不具有酒窩
謝先生的父母一定至少一人具有酒窩
若謝太太無酒窩,則他們的孩子一定有酒窩
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
位於同源染色體上的等位基因,在發生什麼事件時會彼此分離?
染色體複製
減數分裂
細胞分裂
基因突變
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