雅安市2016—2017学年下期期末检测高中一年级
生物试题参
一、选择题
1—5 CAACB 6—10 BBBDD 11-15 BBDCD 16—20 BCCAA 21—25 DBBAC 26-30 DCBCA 31—35 CDDCC 36-40 ADBCD 41(12分,每空2分)
(1)X 隐性 (2)XX (3)50%(或1/2 ) (4)0 1 42(14分)除标记个每空1分 (1)有丝后 4 8 4
(2)着丝点,姐妹染色单体分开形成子染色体(2分) (3)丙、丁
(4)初级精母细胞 常染色体 (2分) 基因突变或染色体交叉互换(2分) (5)CD(2分)
43(12分)除标记个每空1分 (1)平面 立体(或空间) (2)脱氧核糖 (3)脱氧核苷酸序列(2分)
(4)氢键 胸腺嘧啶 鸟嘌呤 (5)反向平行 规则的双螺旋结构 (6)2800(2分) 44(12分)
(1)a(1分)遵循(1分) (2)BbXY、BBXY(2分)4(2分) (3)3/8(2分) (4)图解4分
A
A
Bb
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