问题详情

According to the fifth paragraph，which of the following about bees’ genes is true？
A．Bees’genes allow them to expand their colonies．
B．Bees genes help keep them in their hives．
C．Bees genes make them by from flowers to flower．
D．Bees genes could explain the collapse of some colonies． 请帮忙给出正确答案和分析，谢谢！