12. 为研究某种鱼中新发现的R基因的功能,对该种鱼的受精卵进行基因敲除,使R基因的编码序列缺失4个连续的碱基成为R,获得1条能正常生长的 $\mathrm { \Delta F } _ { 0 }$ 代个体(RR⁻),经杂交培育获得了纯合突变体。与野生型相比,纯合突变体的体型变小,体色变为浅红色。下列叙述错误的是
基因突变与基因重组 · 历年高考生物真题与解析
本页汇总 高考真题检索 的「基因突变与基因重组」高考生物真题共 1 道,覆盖 2026 年,最常出题型为 单选题;含完整答案与解析。
1questions
Past questions included
2026
Years covered
区分题为主
Overall difficulty
Single-choice
Most common question type
Practice This Topic
Do 5 reliable past questions first, then see the answers and explanations after you submit
常用解题方法遗传推理
常见易错点比例误判
Core competencies应用
Past Question List
相关考点
所属章节
Keep Practicing This Topic
Start from one question and continue with the same question type, knowledge point, and approach. You can also describe this topic in one sentence to build a practice paper or handout and print it.
View all past questions for this topic