While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a discovery which led to greater understanding of cell differentiation.
While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a discovery which led to greater understanding of cell differentiation. A. a new class of mutant genes was discovered by Barbara McClintock, a discovery which led B. a new class of mutant genes in corn were discovered by Barbara McClintock, leading C. Barbara McClintock discovered a new class of mutant genes, and it led D. Barbara McClintock discovered a new class of mutant genes, a discovery that led E. Barbara McClintock, who discovered a new class of mutant genes, leading
关于B选项中的 leading ,语法笔记中说 leading的逻辑主语是 Barbara McClintock ,表示万分不解。。。。。