【多选题】A man has genotype A1A2 G1G2. (one each of the A1 and A2 alleles of gene A, one each of the G1 and G2 alleles of gene G ) The A and G loci are on difference chromosomes. What gametes will many meioses produce, in what proportions? A. 1/2 A1A2, 1/2 G1G2 B. 1/4 A1A1, 1/4 A1G1, 1/4 A2G1, 1/4 G1G2 C. 1/4 A1, 1/4 A2, 1/4 G1, 1/4 G2 D. 1/4 A1G1, 1/4 A1/G2, 1/4 A2G1, 1/4 A2G2 E. None of the above F. More information is needed
【多选题】A man has genotype A1A2 G1G2. (one each of the A1 and A2 alleles of gene A, one each of the G1 and G2 alleles of gene G ) The A and G loci are on difference chromosomes. What gametes will many meioses produce, in what proportions? A. 1/2 A1A2, 1/2 G1G2 B. 1/4 A1A1, 1/4 A1G1, 1/4 A2G1, 1/4 G1G2 C. 1/4 A1, 1/4 A2, 1/4 G1, 1/4 G2 D. 1/4 A1G1, 1/4 A1/G2, 1/4 A2G1, 1/4 A2G2 E. None of the above F. More information is needed
已知函数依赖A1A2→B1B2,则下列依赖一定正确的是()。 A: A1A2→B1 B: A1A2→B2 C: A1→B1B2 D: A2→B1B2
已知函数依赖A1A2→B1B2,则下列依赖一定正确的是()。 A: A1A2→B1 B: A1A2→B2 C: A1→B1B2 D: A2→B1B2
双4选1的数据选择器74HC153,输入端A1A2的主要作用是
双4选1的数据选择器74HC153,输入端A1A2的主要作用是
设p不是素数且p | a1a2…ak, 则必存在1≤i≤k, 使得p| ai.
设p不是素数且p | a1a2…ak, 则必存在1≤i≤k, 使得p| ai.
若凸n边形A1A2…An适合以下条件:(1)∠A1=100°(2)∠Ak+1=∠Ak+8°,k=1,2,…,n-1.则n的值是(). A: 5. B: 6. C: 7. D: 8.
若凸n边形A1A2…An适合以下条件:(1)∠A1=100°(2)∠Ak+1=∠Ak+8°,k=1,2,…,n-1.则n的值是(). A: 5. B: 6. C: 7. D: 8.
关于不等式a1+a2+……+an大于等于n(a1a2……an)开n次方
关于不等式a1+a2+……+an大于等于n(a1a2……an)开n次方
对于二阶系统,系统稳定的充要条件为特征方程();对于三阶系统,系统稳定的充要条件为特征方程中所有系数都为正且()。 A: 全部系数非负,a1a2>a0a3 B: 全部系数同号,a1a2>a0a3 C: 全部系数同号,a1a3>a0a2 D: 全部系数同号,a1a2
对于二阶系统,系统稳定的充要条件为特征方程();对于三阶系统,系统稳定的充要条件为特征方程中所有系数都为正且()。 A: 全部系数非负,a1a2>a0a3 B: 全部系数同号,a1a2>a0a3 C: 全部系数同号,a1a3>a0a2 D: 全部系数同号,a1a2
【A1A2型题】霍乱弧菌外毒素导致的腹泻属于哪种腹泻:
【A1A2型题】霍乱弧菌外毒素导致的腹泻属于哪种腹泻:
5个矩阵连乘,最优断开位置数组如下,矩阵最优计算次序为( )[img=462x190]17e441df2b5dbdd.png[/img] A: ( A1 ( (A2A3)(A4A5)) ) B: ( ( (A1A2) (A3A4) ) A5) C: ( ( (A1A2) A3) (A4A5) ) D: ( ( A1(A2A3) ) (A4A5) )
5个矩阵连乘,最优断开位置数组如下,矩阵最优计算次序为( )[img=462x190]17e441df2b5dbdd.png[/img] A: ( A1 ( (A2A3)(A4A5)) ) B: ( ( (A1A2) (A3A4) ) A5) C: ( ( (A1A2) A3) (A4A5) ) D: ( ( A1(A2A3) ) (A4A5) )
已知关系模式R的属性集合U={A1,A2,A3,A4,A5},函数依赖集合F={A1A2→A3,A1A3→A2,A2→A4,A3→A5,A5A3→A2},求(A1A2)+(要求:写出求解过程)
已知关系模式R的属性集合U={A1,A2,A3,A4,A5},函数依赖集合F={A1A2→A3,A1A3→A2,A2→A4,A3→A5,A5A3→A2},求(A1A2)+(要求:写出求解过程)