Advertisements
Advertisements
Question
Distinguish between plasmid DNA and chromosomal DNA.
Advertisements
Solution
| Sr. no. | Plasmid DNA | Chromosomal DNA |
| 1. | Plasmids are circular external DNA that is self-replicating and are naturally found in bacteria and yeast. | Chromosomal DNA sequence, including recognition site, is present in the chromosomes of all organisms. |
| 2. | It is not necessary for normal growth and division. | This is necessary for growth and division. |
| 3. | It contains information about some properties of the cell. | It contains information about all the properties. |
RELATED QUESTIONS
Name the most commonly used bioreactor and describe its working.
The biological scissor is ______.
The enzyme nuclease hydrolyses ______ of polynucleotide chain of DNA.
Polymerase chain reaction is most useful in ______.
From the following list of cloning vectors used in rDNA technology identify the vectors that are the most commonly used.
Plasmids, bacteriophages (Ml3, lambda virus), cosmid, phagemid, BAC (bacterial artificial chromosome), YAC (yeast artificial chromosome), transposons, baculoviruses, and mammalian artificial chromosomes (MACs)
For which of the following reason Agrobacterium tumefaciens is most widely used for gene transfer in plants?
Which of the following is an INCORRECT match?
Identify the properties that a cloning vector must possess to be efficiently used in rDNA technology.
- Control elements like promoter, operator, ribosomal binding sites
- Restriction sites
- Marker genes
- Ori of replication
- Ability to replicate independently
Following are the four statements regarding separation of DNA fragments using Gel electrophoresis. Identify the INCORRECT statements.
i. DNA is negatively charged molecule and so it is loaded on gel towards the Anode terminal.
ii. DNA fragments travel along the surface of the gel whose concentration does not affect movement of DNA.
iii. Smaller the size of DNA fragment, larger is the distance it travels through it.
iv. Pure DNA can be visualized directly by exposing to UV radiation.
EcoRl & Hind III are the examples of ______
Which molecules are called molecular scissors? Why are they called so?
The source of taq Polymerase used in PCR is a ______.
Nucleic acid segment tagged with a radioactive molecule is called ______.
What is the significance of adding proteases at the time of isolation of genetic material (DNA)?
The structure below shows pUC18, which is similar to pBR322 in its function. However, they differ in some of their restriction sites and the number of ori. The ori number for pBR322 is approximately 20.
- How are puc18 and pBR322 used in biotechnological studies?
OR
What will be the impact if the ori in the above structure gets damaged? - The lac z gene has many recognition sites. Study the segment of DNA given below and answer the questions.
5’... ATC GTA AAG CTT CAT…3’
3’... TAG CAT TTC GAA GTA…5’
i) Applying your knowledge of palindrome sequences identify and mark the possible region where the restriction enzyme X will act.
ii) Restriction enzyme Y was used to extract a gene of interest from a plant. This gene needs to be inserted in the given DNA segment which has been treated with restriction enzyme X. Will there be a successful recombination? Explain with a reason. - Which one of the two (pUC18 and pBR322) would you prefer for biotechnological studies? Justify.
The DNA polymerase enzyme used in PCR is obtained from______.
Write a short note on vectors.
Name the enzyme responsible for the transcription of genetic code to produce mRNA.
The three basic steps in genetic modification are:
How does the concept of cloning relate to the multiplication of genetic material in biotechnology?
