妈妈和儿子的dna不同吗

Ning Cheng shouted from the bottom of his teacher Qionghua's heart, with a hint of murmur and lightness. She leaned gently against Ning Cheng. She was several years older than Ning Cheng, and her cultivation level was far better than Ning Cheng's. But at this time, in her heart, Ningcheng was her world....