The restriction sites of 10 kb linear DNA are shown below. How many fragments of DNA would you get when you digest DNA with EcoRI and EcoRV? 1 kb EcoRI 2kb EcoRV 4kb EcoRI 3kb
Molecular Techniques
Molecular techniques are methods employed in molecular biology, genetics, biochemistry, and biophysics to manipulate and analyze nucleic acids (deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)), protein, and lipids. Techniques in molecular biology are employed to investigate the molecular basis for biological activity. These techniques are used to analyze cellular properties, structures, and chemical reactions, with a focus on how certain molecules regulate cellular reactions and growth.
DNA Fingerprinting and Gel Electrophoresis
The genetic makeup of living organisms is shown by a technique known as DNA fingerprinting. The difference is the satellite region of DNA is shown by this process. Alex Jeffreys has invented the process of DNA fingerprinting in 1985. Any biological samples such as blood, hair, saliva, semen can be used for DNA fingerprinting. DNA fingerprinting is also known as DNA profiling or molecular fingerprinting.
Molecular Markers
A known DNA sequence or gene sequence is present on a chromosome, and it is associated with a specific trait or character. It is mainly used as a genetic marker of the molecular marker. The first genetic map was done in a fruit fly, using genes as the first marker. In two categories, molecular markers are classified, classical marker and a DNA marker. A molecular marker is also known as a genetic marker.
DNA Sequencing
The most important feature of DNA (deoxyribonucleic acid) molecules are nucleotide sequences and the identification of genes and their activities. This the reason why scientists have been working to determine the sequences of pieces of DNA covered under the genomic field. The primary objective of the Human Genome Project was to determine the nucleotide sequence of the entire human nuclear genome. DNA sequencing selectively eliminates the introns leading to only exome sequencing that allows proteins coding.
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![**Title:** Exploring Restriction Enzymes: DNA Fragmentation with EcoRI and EcoRV
**Description:**
The diagram illustrates the restriction sites present on a 10 kb linear DNA fragment. The objective is to determine the number and length of DNA fragments produced when digested with the restriction enzymes EcoRI and EcoRV.
**Diagram Explanation:**
- The linear DNA is 10 kilobases (kb) in length.
- There are three marked restriction sites along the DNA:
- **EcoRI sites:** Represented by red lines. They appear at 1 kb and 7 kb positions, respectively.
- **EcoRV site:** Represented by a green line at the 3 kb position.
**Fragmentation Details:**
- When the DNA is digested with EcoRI and EcoRV, the following fragments are produced:
- A fragment from 0 to 1 kb (1 kb in length)
- A fragment from 1 kb to 3 kb (2 kb in length)
- A fragment from 3 kb to 7 kb (4 kb in length)
- A fragment from 7 kb to 10 kb (3 kb in length)
**Conclusion:**
In total, you will obtain four DNA fragments of sizes: 1 kb, 2 kb, 4 kb, and 3 kb. Understanding the use of restriction enzymes like EcoRI and EcoRV is crucial for DNA manipulation and analysis in molecular biology.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc42a53c5-a661-4e08-8bd7-4bdfe484c1d7%2Ffdfd7fca-04d9-4fae-b074-b1dcd5baacab%2F1o5dj8_processed.png&w=3840&q=75)
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