The invention of PCR make DNA fingerprinting possible because "PCR made it possible to produce enough copies for reliable tests".
<u>Option: C</u>
<u>Explanation:</u>
With the development of the PCR technique, DNA profiling has made enormous progress both in its distinguishing capacity and in its ability to survive information from very limited or damaged beginning samples. The PCR cycle mimics the biochemical mechanism of DNA replication yet restricts it to fragments of concern unique to DNA.
In the PCR method, the specimen of DNA is denatured by heating into separate polynucleotide strands. Two primers of DNA oligonucleotides are used for hybridization on opposite DNA strands to two matching nearby sites. Thus two new copies of the interest sequences are produced. Quantitative PCR methods allow accurate, high and automated calculations of the throughput.
Options:
a. It is a type of virus that infects bacteria.
b. It is a type of bacteria that infects viruses.
c. It is a virus consisting of a protein coat and a DNA core.
d. It is a bacterial strain consisting of protein and a DNA core.
Answer:
<u>Option-(A, C):</u> It is a type of virus that infects bacteria, and it is a virus consisting of a protein coat and a DNA core.
Explanation:
- The bacteriophage is a form of unicellular cell that comprises of a very specific form of structure, having the genetic materials intact inside the protein coat and the rest of the body is termed to be more of a crystalline in nature. As, the phage is categorized for having the main host as the bacterial cell, and it replicates itself by using the two main pathways which are the following:
- Lytic cycle,
- Lysogenic cycle.
A. Lungs are strenghtened through cardiovascular exercise.
Explanation:
As a diagnostic radiographer you'll use x-ray and ultrasound machines, as well as other forms of imaging technology, to look inside a patient's body and find out what's causing their illness. Working in a range of hospital departments, you'll acquire images to help with the diagnosis of illnesses and injuries.
