妈妈和儿子的dna不同吗

After hearing Ning Cheng's words, Sisi was dumbfounded. After a long time, she suddenly understood. She pointed at Ning Cheng and stammered, "You, you, I understand, you are the Jiangzhou Wanderer, the one who rushed up." Jiangzhou Wanderers on the top of Jiujiu Peeping Star Tower....