u/espjp

I have 2 apple fritters from the same package and they sprouted on the same day. One of them is beautiful, healthy, and large, but the sister is much smaller, has a strange shape, and a darker green color. What could be the reason? They have the same food, soil, and conditions. Is it something genetic or phenotypic? I have more RQS and they're all perfect, this is the only one like this. The first three photos are of the rare one, and the last two are of her sister.