Same strain but two different looking plants!

[Pyrose94]

I bought some seeds from crop king seeds. Lambs breath femenized autos. Planted 4 And 2 survived. This is my first grow and I believe they are in there 3rd week of flower. But why do they look like two different plants? They were planted at the same time, in the same media, and given the same amendments and nutrients each time!

 

[PE636]

In a nutshell, its for the same reason my brother and I come from the same parents but look quite different. In the plant world we call them different phenotypes.