Answer:
The correct answer will be option-E.
Explanation:
The CRISPR-Cas9 system is a simple and most versatile genome-editing tool to edit the genome of an organism.
The system consists of two components: "Cas-9 enzyme" which act like molecular scissors to cut the DNA and "Guide RNA or gRNA" which guides the Cas-9 enzyme to the target DNA by binding to the target DNA.
The gRNA consists of 20 bases long RNA sequence which is complementary to the sequence of the target DNA. This binding ensures the right binding and cutting of the target DNA.
Thus, option-E is the correct answer.
Answer: The article is a emotionally charged tone ( argumentative tone). A argumentative article is based on a persons opinion and is driven by their thoughts. this is shown through when the author wrote, "NASA’s space program is worth preserving at any cost." This shows that the author personally believes that the space station needs to be preserved, therefore their tone is argumentative since they are trying to prove their opinion to be right. This is also presented when the author stated "All of these activities offer hope to our increasingly overcrowded planet." and "It is impossible to list all the benefits of a thriving space program." All of these examples show that the author has taken a strong opinion on the matter. This therefore makes their town argumentive and emotionally based.
This is because the GP120 protein
of the HIV virus that forms the ‘knob’ is
essential for the infection of CD4 cells
of the immune system by the virus. The glycoprotein is, therefore, a good
target for vaccines especially since the
molecule is highly conserved because most mutations in the region could be highly deleterious to the virus.
Actually, its chance is 25%. A grey cat holds the alleles BW. A grey cat (BW) crosses with a black cat (BB). The percentage is 25% because the allele, “W” is present two times.
The nurse will explain to the client is
the catheterization will visualize the disease process in the coronary arteries.
A cardiac catheterization delivers information on how well a heart
works, recognizes problems and allows for procedures to open blocked
arteries.
For example, during cardiac catheterization your doctor may:
<span>
Gather
up samples of blood to measure the oxygen content in the four chambers of
your heart.
<span>Take X-rays using
contrast dye injected over the catheter to look for narrowed or blocked
coronary arteries. This is known as coronary arteriography or coronary
angiography.
</span>
Assess
the ability of the pumping chambers to contract.
Look
for deficiencies in the valves or chambers of your heart.
Execute
a percutaneous coronary intervention (PCI) such as coronary
angioplasty with stenting to open up narrowed or blocked segments of
a coronary artery.
Check
the compression in the four chambers of your heart.
Remove
a small piece of heart tissue to examine under a microscope (biopsy).</span>