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1.可获得无子西瓜、青霉素高产菌株、矮杆抗病小麦和 无子番茄的方法分别是 ①诱变育种 ②杂交育种 ③单倍体育种 ④多倍体育种 ⑤生长素处理 A.⑤①②④; B.④①②⑤; c.②①③⑤; D.④①③②。 2.科学家将雌黑鼠乳腺细胞的细胞核移入去核的卵细 胞内,待发育成早期胚胎后移植入褐鼠的子宫,该褐鼠 产下小鼠的体色和性别是 A.黑、雌; B.褐、雌;C.白、雄;D.黑、雄。 3.目前科学家把兔子血红蛋白基因导入大肠杆菌细胞 中,在大肠杆菌细胞中合成了兔子的血红蛋白,下列所
1. The methods for obtaining watermelon-free, penicillin-producing strains, dwarf-resistant wheat, and non-vegetative tomatoes were 1 mutation breeding, 2 cross breeding, 3 haploid breeding, 4 multiplied breeding, 5 auxin treatment, A.5124; B.4125; c.2135; D.4132. 2. The scientists moved the nuclei of female black rat mammary gland cells into enucleated egg cells, and after they were developed into early embryos, they were transplanted into the uterus of brown rat. The body color and sex of mice born in this brown rat were A. black and female. B. brown, female; C. white, male; D. black, male. 3. At present, scientists have introduced rabbit haemoglobin genes into E. coli cells and synthesized rabbit hemoglobin in E. coli cells.