Wednesday, April 7, 2010

RECOMBINANT DNA

1. CLICK HERE for an animation that shows how recombinant DNA (rDNA) is formed.
1.1 Why do we need a plasmid?
1.2 Can you think of ways recombinant DNA is used by geneticists?

2. CLICK HERE for a tutorial on Recombinant DNA.

3. This tutorial from the University of Delaware is a great step by step guide into how to create Recombinant DNA.
3.1 How is Recombiant DNA Technology important in medicine and agriculture?

3 comments:

  1. 1.1. We need plasmids because they serve as vectors. Vectors help a gene get transferred from one cell to another. A plasmid is a circular DNA molecule found in bacteria. First scientists isolate the gene in both the plasmid and the chromosome using restriction enzymes, and then insert the particular gene in the plasmid which is complimentary to the gene. The plasmid and the gene are now a recombinant piece of DNA which can be put in a cell where it can grow and divide with the altered gene.

    1.2. Recombinant DNA is used by geneticists to make genetically engineered animals or plants. they isolate the desired genes and put it into the embryo of the animal or the seedling of a plant. (Although they can't make sure it will be shown in the offspring).

    3.1. Recombinant DNA Technology is important in medicine and agriculture because geneticists can alter a gene in an embryo to benefit the child's health, or alter a gene in a plant so it has more of a chance to survive and provide lots of crops.

    ReplyDelete
  2. 1.1 Why do we need a plasmid?
    Plasmids are used as vectors, which are essential in introducing a gene into a cell, and serve as a means of transport by which a gene is transferred from one cell to another. Plasmids are extremely important when scientists recombine DNA, and are very useful.
    1.2 Can you think of ways recombinant DNA is used by geneticists?
    How recombinant DNA is used by geneticists is it can be used to insert desired traits in particular cells in a very efficient manner. And when strategically mated with another of its species, this desired trait may be able to pass down the generations.
    3.1 How is Recombinant DNA Technology important in medicine and agriculture?
    How recombinant DNA technology is important in medicine and agriculture is it can genetically engineer something to make it better/more efficient, such as, like Delfin said before, genetically altering a plant to make it survive longer and provide many crops, or even to make it pest-resistant.

    ReplyDelete
  3. 1.1. Why do we need a plasmid?
    Since plasmids are used as vectors they help a gene get transfered from one cell to another cell.

    1.2. Can you think of ways recombinant DNA is used by geneticists?
    A way geneticists use recombinant DNA is to insert or exsert different traits in a specific cell.

    3.1. How is recombinant DNA technology is important in medicine and agriculture?
    The answer is already said by Delfin and Nina.

    Julissa V. :)

    ReplyDelete