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I'm using Expression Blend 3 and am writing some of the XAML by hand, specifically the color values of controls.
I have a list of RGB colors already converted to hexadecimal. I just need to insert the hex value into my XAML.
Initially, I pasted the hex value from an email into the appropriate properties. Before I could finish, Blend started having a fit, underlining the color property with a squiggle and a tooltip telling me "Token is not valid." After some research, I found placing a pound sign ("#") in front of the hex value resolved this issue.
In the process of researching this problem, I started changing colors via the color picker in Blend. I quickly found the values Blend was inserting not only started with the pound sign, but also "FF". The values I was pasting were valid colors in a valid hex format. But when entering the RGB values into Blend and letting Blend insert the hex value, I noticed all my colors were prefixed with "#FF". Removing the #, as I already pointed out, generated errors, but removing the "FF" seemed to have no effect at all.
In the world of hexadecimal colors, is the color #5A7F39 really the same as #FF5A7F39? Why the FF? They are two different hex values, right? But they appear identical onscreen. Why the difference?
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On the leading strand, DNA synthesis occurs continuously. On the lagging strand, DNA synthesis restarts many times as the helix unwinds, resulting in many short fragments called “Okazaki fragments.” DNA ligase joins the Okazaki fragments together into a single DNA molecule.
The leading strand and lagging strand are the two strands at the replication fork, which serve as the templates for DNA replication. The leading strand is the strand of nascent DNA which is synthesized in the same direction as the growing replication fork. The synthesis of leading strand is continuous.
When replication begins, the two parent DNA strands are separated. One of these is called the leading strand, and it runs in the 3' to 5' direction and is replicated continuously because DNA polymerase works antiparallel, building in the 5' to 3' direction.
Two molecules of helicase open the DNA in both directions, allowing DNA replication to occur both ways. This creates two leading strands and two lagging strands per replication fork. Another enzyme, topoisomerase, prevents supercoiling of the DNA ahead of both replication forks.
That may be the alpha component of the color, which represents the opacity (00 -> transparent, FF -> opaque).
MSDN seems to agree with this: Color
16-bit hexadecimal, alpha -- #AARRGGBB
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