25. The restriction enzymes Kpnl and Acc651 recognize and cleave the same 6-bp sequence. You have a plasmid and a linear DNA strand that both contain a Kpnl and Acc651 sequence in the same orientation as shown below. You digest both DNA pieces with both enzymes and then attempt to ligate the sticky ends, followed by treatment with DNA ligase. What will happen? 5' GGTACC3 3CCATGGS 5' GGTACC 3' 3CCAIGGS Kpnl Acc651 A) You will produce sticky ends but the two types of ends will not ligate. Instead, you may produce a small amount of religated plasmid where the digested plasmid sequence re-inserts. B) You will produce a recombinant plasmid in which the linear DNA strand is ligated in between the two sites, suitable for cloning. C) You will produce blunt ends that will not ligate because the two restriction enzymes will both operate on both of the sites. D) All the DNA will be completely digested as if you had applied a general DNAse enzyme.
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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