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The roles of DNA helicase and DNA polymerase in DNA replication?

DNA helicase "unzip," or separate, a strand of DNA at positions called origins. This means that the hydrogen bonds between complementary base pairs are removed (DNA is dou… (MORE)

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Blu WikiAnswers

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What is DNA?

Deoxyribonucleic Acid DNA is a nucleic acid polymer consisting of two long backbones, with nitrogenous bases connecting them (imagine a ladder). This structure is then twi… (MORE)

Suzanne Rivera

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Does DNA code for DNA polymerase?

Enzymes involved in template directed synthesis of DNA from deoxyribonucleotide E. Coli, III appears to be most important in genome replication and I is important for its abil… (MORE)

Ruth Mendez

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What if DNA does not match mothers DNA?

If it does not match, than it is not that persons child.... adoption... or carrying another womans eggs On very RARE occasions a person can be chimeric... and they "Are ther… (MORE)

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Where is the DNA located in your bodies and what does the DNA do?

DNA is in all the cells of the body except red blood cells. It is smaller than microscopic, and stays inside the nucleus of the cell. The cell's nucleus is it's brain. DNA is… (MORE)

Nyajuaini Susan

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Rene Kratz

B.A. in biology and a Ph.D. in botany

In Genetics

DNA: The Genetic Code of Life

DNA contains the genetic code that determine the structure and function of living things. The genetic code is spelled out in the pattern of chemicals that make up the DNA stra… (MORE)

Liza Lankford

In Molecular Biology

Discover DNA Models

Creating DNA models is a fun and educational way to learn more about the structure and function of DNA. Making a physical representation of a DNA model is a good project for b…iology class because it easily illustrates the structure of DNA. If you need some help getting started on a model, use this guide to help.For this model, you will need 6 or 12-inch pipe cleaners in two different colors (black/white or red/green are good combinations) and 36, 6 mm beads. You will need 4 different colors of beads, 12 each in two colors and 6 each of the other two colors. The website Life123 has a step-by-step guide for creating the model. The pipe cleaner pieces represent the rungs bonding the DNA bases to the sugars. There are billions of these in DNA, so no matter what materials you use for a model you will only create one small sample piece of DNA. The different colors of beads represent the sugars and need to be sorted into correct pairings. This model will take about 45 minutes to make.For this model, you will need black and red licorice sticks, gumdrops in four different colors, some mini marshmallows, and a pack of wooden toothpicks or plastic ones that are all the same color. You may want to create a map legend to show which colors represent which sugars. Instructables.com has detailed instructions on how to create a candy model. Make sure you twist it to create the look of a double helix. A candy version with key takes about 30 minutes to complete.Scissors, tape, and construction paper in at least four different colors are what you need for this model. Stars and seas.com has complete instructions on how to make it. For this model, you will need to cut out shapes from the construction paper to use as the base symbols and tape them together to form the nucleotide models. You will create a 10- rung model segment with them, attaching each group with tape. Because you are cutting out shapes to make this version, it may take over an hour to complete.This version of DNA models takes the most planning and the longest amount of time to create. It is, however, a great project for young budding scientists to do with an adult and looks amazing. Ericharshbarger.org has all the details for this project. To create your Lego model, you will need an 8x8 Lego base along with plates, cylinders, and Lego technic bricks and pins. You will need 80 of the 1x1 cylinders and 40 of the 2x1 technic bricks, for example, so you should also know that making this model is also going to be the most costly version. The finished product, however, looks amazing and is worthy of sitting on any desk for science lovers to admire. A Lego model takes about an hour to finish.DNA models are the best way for both kids and adults to clearly and easily visualize the way DNA works. Creating one of these four models does a great job of illustrating the different combinations of sugars and how they are linked together. Although they look elaborate and the task may seem daunting, once you have chosen which colored pieces to use for which elements the project will come together smoothly and you will be pleased and impressed with the results.DNA structure is composed of long strands that consist of alternating sugars, phosphate groups, and nitrogenous bases. A DNA molecule's basic unit of structure is called the nucleotide. A nucleotide is composed of a deoxyribose sugar molecule, a phosphate, and a nitrogen-containing base. (MORE)

Rene Kratz

B.A. in biology and a Ph.D. in botany

In Cell Biology

DNA vs RNA

DNA and RNA share many similarities, but also have some key differences. DNA controls the structure, function, and behavior of all organisms, and RNA assists in carrying out t… (MORE)

Liza Lankford

In Genetics

Modeling DNA Structure and Function: An Overview

Modeling DNA is a great way to learn about this essential building block of life. DNA is responsible for passing on your genetic information, and each separate strand of DNA e…ncases vast amounts of information regarding everything from your physical composition to the color of your eyes and hair and the shape of your lips and toes. It's even responsible for the way you digest food and what kinds of things you can taste. Modeling DNA is an in-depth approach to beginning to understand just what DNA is and how it works. It's also a great idea for a science project or for something fun to do with leftover candy with an educational twist.DNA, or deoxyribonucleic acid, is comprised of strings of different sugars and phosphate groups. The most important part of DNA's composition are the nitrogenous bases, or "nucleotides." There are four different bases: adenine, thymine, guanine and cytosine. Each of these bases pairs up with another in the group to create long chains of information that translate into code for different things. In order to translate the code from the DNA into something workable, a strip of something called RNA attaches itself to the DNA and transcribes it into coding to create different proteins. RNA, structurally, is just like DNA, but differs in that instead of thymine, RNA has a nucleotide called "uracil." Without the RNA, DNA is just untranslated code.DNA has a unique structure called a "double helix." This shape is possible because of the way the nucleotide bases pair up together, forming a sort of spiraling, twisted ladder of nucleotides, sugars and phosphates. However, it is important to remember when modeling DNA that the nucleotide pairings don't connect in the middle where the rungs of a ladder would be. Rather, the middle of the double helix is structured similar to a zipper, where there is space between where a rung would traditionally connect with the other side of a ladder.All sorts of things can be used for modeling DNA. You can use marshmallows and toothpicks that have been cut in half to build the individual nucleotides and use whole toothpicks to bond them together to create your double helix. You can also use styrofoam balls and wire or beads and bits of jewelry. You can even make a DNA mobile! Use your imagination to come up with different ways you can model DNA.It's fairly easy to use a DNA model for a science project. You could build the separate nucleotides and label them appropriately. From there, you can use small pins and strips of paper to adhere the separate labels to their respective places. Be sure to take note of small details regarding DNA to make your model as accurate as possible; for instance, it takes a little over 10 base nucleotide pairs to complete a circle of the double helix structure. You can even create a small strip of RNA ready to translate your DNA model. With an eye for detail and appropriate labeling, modeling DNA can be an excellent science project idea.Modeling DNA is a wonderful project that can help you become more acquainted with the structure and function of DNA. Be sure to pay attention to the small details so your model is as accurate as possible.DNA is found inside the nucleus of cells and is called nuclear DNA. Each DNA molecule is tightly packaged inside the nucleus. This package is called a chromosome. (MORE)

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Where did we get our DNA from?

Our DNA is inherited from our parents half from your mother and half from your father, you may resemble your parents but your never alike.

Courtney Webb

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DNA controls what and what does DNA stand for?

DNA stands for Deoxyribo Nucleic Acid Edit by DrBeaver: DNA controls protein production. It is expressed through transcription and translation to form these proteins.

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How Z-DNA differs from a DNA and b DNA?

in double helical nature. z-dna is left handed but b-dna is right handed

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What is DNA to DNA pairing?

This is called base-pairing. There are three essential parts in dna: the sugar (deoxyribose), phosphate, and the nucleic acids. there are four nucleic acids that are broken in… (MORE)

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What we can do with DNA?

DNA can let us track people. Just by a sample of it we know their name, birth, and sperm count.

Results for: DNA

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