This is my favourite graffiti so far in Montreal. There is more every time that I look at it.
Walking around Montreal in the morning. Not the best light but I tried! I added the fog to decrease the impact of the cars – but it may have brought more attention to them.
Walking around Montreal this morning. Not the best light but I tried! via 500px
In humans, males are 46XY and females are 46XX. The Y chromosome has been in the news recently but we’re more concerned about the X chromosome today. You’ll notice that there are two copies of the X in human females – do we have double the X gene products? No, X inactivation silences most but not all of the genes on one of the two X chromosomes in mammalian females.