What is DNA?
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).
The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people. The order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences.
DNA bases pair up with each other, A with T and C with G, to form units called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule. Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix. The structure of the double helix is somewhat like a ladder, with the base pairs forming the ladder’s rungs and the sugar and phosphate molecules forming the vertical sidepieces of the ladder.
An important property of DNA is that it can replicate, or make copies of itself. Each strand of DNA in the double helix can serve as a pattern for duplicating the sequence of bases. This is critical when cells divide because each new cell needs to have an exact copy of the DNA present in the old cell.
DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone.
Help: Access
The Access attribute of a group specifies how the group can be viewed, browsed, or searched.
Public: Anyone can view the group. The group shows up in browse and search.
Private: Only members of the group can view the group. The group shows up in browse and search.
Secret: Only members of the group can view the group. The group does not show up in browse or search.
Help: Holla Board
The Holla Board is a place where members can write short messages for
everyone to see. It is a quick and fun way for people to catch up with each other
in a group. Unlike the Discussion Board which follows a more traditional forum style
exchange, the Holla Board emphasizes what is happening right now and right here in your group.
For this reason, messages are limited to 100 characters, and only the most recent messages are displayed.
A "new" icon (

) appearing in front of a message indicates that the message was posted within the last
5 minutes.
To see the date and time when a message was posted, move your mouse cursor over the message, and
a tooltip will appear that shows you the post date and time of the message.
Please note that if your message is deemed unsuitable for the group, it may be deleted from the Holla Board.
To post a message, click on the "Post Message" link. Please note that only a subset of the
message syntax is supported for messages. Please click on the "Syntax Help" button to find out more.
Help: Syntax in Messages
The following syntax can be used when posting messages:
Link: [url=http://www.imvu.com]Go to IMVU![/url]
Image: [img]http://www.somedomain.com/some_folder/some_pic.gif[/img]
Email address: [email]foo@bar.com[/email]
Text color: [color=blue]This is blue[/color] [color=#ff00ff]This is magenta[/color]
Text size: [size=20px]This is really big[/size] [size=8px]This is really small[/size]
Bold: [b]This is in bold[/b]
Underline: [u]This is underlined[/u]
Strikeout and italic: [s]strikeout[/s] [i]italic[/i]
Center: [center]This is centered[/center]
Horizontal divider: [hr]
Monospace font: [code]This is in monospace font[/code]
Superscript: E=mc[sup]2[/sup]
Subscript: H[sub]2[/sub]O
Help: Syntax in Messages
The following syntax can be used when posting Holla messages:
Link: [url=http://www.imvu.com]Go to IMVU![/url]
Email address: [email]foo@bar.com[/email]
Text color: [color=blue]This is blue[/color] [color=#ff00ff]This is magenta[/color]
Text size: [size=20px]This is really big[/size] [size=8px]This is really small[/size]
Bold: [b]This is in bold[/b]
Underline: [u]This is underlined[/u]
Strikeout and italic: [s]strikeout[/s] [i]italic[/i]
Superscript: E=mc[sup]2[/sup]
Subscript: H[sub]2[/sub]O