题目

阅读理解 One day,gardeners might not just hear the buzz of bees among their flowers, but thewhirr of robots, too. Scientists have managed to turn an unassuming drone intoa remote-controlled pollinator by attachinghorsehairs coated with a special, sticky glue to the under part of it. Animalpollinators are needed for the reproduction of 90% of flowering plants and onethird of human food crops. Chief among those are bees-but many bee populationsin the United States have been in steep decline in recent decades. Thus, thedecline of bees isn't just worrisome because it could spoil ecosystems. bu已知绵羊角的表现型与基因型的关系如下，正确的判断是（ ）A. 若双亲无角，则子代全部无角B. 若双亲有角，则子代全部有角C. 若双亲基因型为Hh，则子代有角与无角的数量比为1：1D. 绵羊角的性状遗传不遵循基因的分离定律