Author: wierzbic

What is microRNA and how does it work?

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microRNAs are a family of small, non-coding RNA molecules that have garnered increasing attention in the last 30 years. Their functionality as post-transcriptional off-switches make them important regulators of gene expression. This ability also suggests that microRNA therapies may have exciting clinical promise.

What is microRNA and how does it work?

Posted onAuthorwierzbic

This video introduces the production and purpose of miRNA. It discusses the functions of proteins including Drosha, Dicer, and RISC. The produced miRNA functions in posttranscriptional regulation by blocking translation or cutting mRNA to silence gene expression.

How are eukaryotic genes regulated?

Posted onAuthorwierzbic

This video introduces broad themes in eukaryotic gene regulation, including nucleosomes, enhancers, insulators, and a look back at the Gal system in yeast. To illustrate the most important polymer in life, it does it all with the help of polymer clay models!

What are the impacts of different types of point mutations?

Posted onAuthorwierzbic

What are point mutations? This video introduces the basics of point mutations, which can affect both DNA and RNA. Point mutations can affect the sequence of DNA and RNA, and the ones that will be covered in these videos are nonsense, missense, silent, insertion, and deletion mutations.

How to predict protein sequence based on mRNA sequence?

Posted onAuthorwierzbic

mRNA, tRNA and ribosomes are involved in the process of translation, or protein synthesis. By understanding the genetic code and important features about the way mRNA is read, protein sequences can be predicted.

What is the difference between DNA and RNA?

Posted onAuthorwierzbic

The central dogma of biology hints that DNA is for long-term storage of information and RNA is for quickly making lots of copies of a gene when needed for expression. But what biochemical differences exist between DNA and RNA to make these roles happen?

How does Agrobacterium help us produce transgenic plants?

Posted onAuthorwierzbic

This video gives a brief overview of the method used to create transgenic plants using gene introduction mediated by the natural gene transfer done by Agrobacterium tumefaciens.

How are chromosome ends maintained?

Posted onAuthorwierzbic

This video discusses the significance of telomeres and telomerase. Specifically, it summarizes how they work, why they are important, and when problems can arise, especially in cancer. It also discusses their association with aging.

Why are the Okazaki fragments important?

Posted onAuthorwierzbic

What exactly are Okazaki fragments and why are they important in our cells? They actually play a fundamental role in the replication of our DNA, as they efficiently and effectively aid in lagging strand replication. Beyond that, their discovery in 1966 is attributed to a unique team with an intriguing story.

How and why was golden rice created?

Posted onAuthorwierzbic

This video explain the creation of an inspiring non for profit genetically modified crop, which offer a solution to the widespread problem of vitamin A deficiencies in the many areas of the world.