Aileen's expression was indescribable. She couldn't believe the seemingly infamous and useless cousin-in-law was this knowledgeable. She admired intelligent people the most because there was always something to learn from them. That was also why she adored her cousin so much—he was truly a genius.
Aysel watched with a smile as Aileen began scribbling furiously, her earlier frustration replaced with focus. Aileen had only asked the earlier questions skeptically, but now, she had on a serious expression, "So, in meiosis, the chromosomes get shuffled around?"
Aysel nodded, patting Aileen's head, which took the girl by surprise, but she was quickly drawn in by Aysel's calm, sweet voice.
"Yes, crossing over happens during prophase I. The homologous chromosomes exchange bits of DNA, so each gamete is unique. That's why we're all genetically different from our parents."
