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Prokaryotes define a specific type of organisms such as Bacteria where its genome is mostly a circular, single molecule of double stranded DNA. These organisms are capable of passing on their genes through asexual reproduction where a single cell results into two. As a result, bacteria is able to exchange DNA by three general processes: transformation, conjugation and transduction.
Published by Darcy Tang 60 months ago in Genetics & DNA | +3 votes | 2 comments
During DNA replication, there are chances that mutations arises when certain bases are inserted or deleted. However, mistakes always occur during DNA replication because its speed rate is approximately 3000 nucleotides per minute. Thus, the error rate is one per every 100,000 nucleotides which needs to be repaired using error-free mechanisms. These biological repair mechanisms include direct reversal, base-excision, nucleotide-excision, and mismatch in which will be further explained.
Published by Darcy Tang 61 months ago in Genetics & DNA | +0 votes | 0 comments
There are a few differences in transcription of DNA between prokaryotes and eukaryotes. In this article, the focus will be primarily on how eukaryotes undergo from DNA to RNA with the main events that must occur, preinitiation, initiation, elongation and termination. Before mRNA is ready to be translated into a protein, there are three processes that it must undergo.
Published by Darcy Tang 61 months ago in Genetics & DNA | +1 votes | 0 comments
Whole-genome sequencing is the main approach to determining the sequence of massive segments of DNA into smaller pieces. The Traditional Whole-Genome Shotgun Sequencing is similar to Next-Generation Whole-Genome Shotgun Sequencing, but the next-generation technique is much more efficient in producing substantial amounts of sequencing reactions simultaneously. In this article, you will be able to understand how the two approaches to whole-genome sequencing in a more simpler term and which one is...
Published by Darcy Tang 64 months ago in Biology | +0 votes | 0 comments
DNA replication is an important process in a living organism because every cell in the living body consists of the same genetic material. As a result, this process needs to be very precise in order to produce the correct type of protein for the body to function properly. The wonders of DNA replication within living organisms is an extremely complex process, but it is briefly summarized here.
Published by Darcy Tang 65 months ago in Biology | +0 votes | 0 comments
Aqua Bounty Technologies Inc has developed a genetically modified fish, AquAdvantage salmon, that has been inserted with a growth hormone. The purpose of this drug is to increase the growth rate of Atlantic salmon but it is hard to decide whether this fish will have any side effects or risk that may affect human beings.
Published by Darcy Tang 66 months ago in Food Safety | +0 votes | 0 comments