OK, so that is a wrap on DNA, a topic of immense significance in the world of biology and genetics.
Over the past few weeks, I have released fourteen revision videos on DNA, with accompanying posts on here and with information sheets accompanying each video (you can find a link to the information sheets in the links below).
In the videos, I have covered:
- DNA and Genes - I looked at how many genes does a human have? Do we have more genes than a plant? Do larger organisms, such as trees, have more genes than humans?
- Genetics and Mendel — DNA, genes, dominant and recessive traits - I introduced recessive and dominant genetic traits and Gregor Mendel, an Austrian scientist and Augustinian friar known as the "father of modern genetics"
- How long is the DNA in a human cell? - in this video, I had some fun with the structure of DNA and maths and showed how long the DNA is in one cell.
- DNA Packaging - how do we package DNA into the nucleus? - and in this video, I looked at how we can pack the surprisingly long DNA molecules we find in all cells, into the relatively small space of the nucleus.
I then moved on to the all-important three Rs of DNA - replication (copy), repair and recombination:
- DNA replication: How does a cell make a copy of its DNA?
- DNA repair: How can DNA become damaged in the cell?
- DNA repair: DNA Repair - BER, direct, proofreading, HR, MMR, NHEJ and NER
- DNA Recombination and Holiday Junction: The Key to Genetic Variation
After the three Rs, I looked at transcription and translation, the process of making protein from a DNA sequence:
- Transcription - making proteins from DNA - the mRNA
- Translation - making proteins from DNA - decoding mRNA to make the protein
Next, I asked the important question of how cells regulate the processes of transcription and translation:
I finished off the series by looking at some lab techniques we use to work with DNA:
- DNA Cloning - how do we clone DNA in the lab?
- DNA Cloning - how to overcome some common problems
- Understanding Nucleic Acid Hybridisation: Methods & Applications Explained
If you found these posts and videos useful, please consider following my YouTube Channel.
If you would like to support my blogging efforts, then please feel free to buy me a coffee at https://www.buymeacoffee.com/drnickm
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