<span>The voyage of the HMS Beagle is led by the scientitst
Charles Darwin in search for species around the globe and a curious observation that led him to
theorize about evolution. It leaves form Plymouth Harbor, toured around the
Madeira and Canary islands and made a landfall at the Cape of Verde islands. The
expedition was originally planned to end in two years. It got delayed and
turned into five years due to Darwin spending most of his time exploring on
land. the answer is D.</span>
Answer: "closed" .
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'<span>According to the following diagram, approximately how much time goes by between phase H and phase B? Explain your answer.'
I'll try to explain this as simply as possible. A single moon cycle is 29 and a half days. Each individual cycle takes approximately 3 and a half days to transition to the next phase, so i</span>f you want to know how much time goes by between phase H and phase B, you would multiply 3.5 by however many phases there are between H and B. The answer is approximately 11 or so days.
I hope this helped!
Answer:
The correct answer is: Gene Therapy.
Explanation:
- Gene therapy can be defined as a broad biomedical and biotechnological technique by which diseases resulting due to the inheritance of mutated or inaccurate gene sequence from the parents or the generation of a sudden mutation in the genome of a person during the course of his life can be prevented.
- RNAi or RNA interference technology is one of the many techniques used to correct various hereditary or gene related disorders.
- In this technique, small oligonucleotides of RNA (Ribonucleic acid) of 22 to 24 nucleotides in length are used to bind to the complementary sequence present in the mRNA (messenger RNA) molecules.This results in the generation of double stranded RNA molecules which functions in two ways:
- They are recognised by RISC or RNA-induced silencing complexes, having endonuclease activity. The RISC complex cleaves and degrades the target mRNA and hence prevents the formation of the target protein.
- The double-stranded RNA molecules stalls the ribosomes and prevent their progression along the mRNA molecules, hence protein synthesis in inhibited.
- This technique is useful in the following ways:
- Cancer often results due to the unregulated activation of the oncogenes which are responsible for promoting uncontrolled growth and division in cells. The use of RNAi can prevent the expression of the onco-proteins which are majorly responsible for causing cancer.
- Alzheimer's disease is often caused due to the accumulation of misfolded amyloid beta and tau proteins in the neurons. The RNAi technology can be used to prevent the formation of the improperly folded proteins.
