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SUDNA 🧬 Led light made
@sud_experiment
#Random Dna Sequence Tools
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LAThe technique I’m using is called Plasmid Miniprep. It’s a fast and efficient way to isolate plasmid DNA from bacteria, which is essential for other procedures like cloning, sequencing etc… 🧪
I was specifically extracting DNA here for cloning! Let me know in the comments if you’d be interested in seeing that 🧬
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#genetics #dnaextraction #microbiology #gradstudent #postgrad #student #biology #research
@labratlaura
331.2K
BI💬 Comment “DNA” to get notes on DNA Replication! 🧬✨
Ready? Let’s make replication feel like a fun mission, not a boring chapter 😄👇
🧠 DNA Replication = The cell’s “copy & backup” before division ✅
So both new cells get the same genetic instructions 📚🧬
⸻
🚪 1) Start Point: Origin of Replication 📍
Replication begins at specific spots called origins → DNA opens up from here 🔓
🌀 2) Unzipping the Helix
🧩 Helicase = the zipper opener 😮💨➡️
It breaks hydrogen bonds & creates a replication fork 🍴
🛡️ SSB Proteins hold strands apart like clips 🧷 so they don’t re-join!
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🧱 3) Primer Setup (Because polymerase needs a start!)
🛠️ Primase lays down a tiny RNA primer 🧷
Think of it as the “start button” ▶️
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🏗️ 4) Building New DNA (5’ → 3’ only!)
👷 DNA Polymerase adds nucleotides using base-pair rules:
🔸 A ↔ T 💞
🔸 C ↔ G 🤝
⚡ Leading strand = smooth continuous build 🛣️
🐢 Lagging strand = built in pieces (Okazaki fragments) 🧩🧩🧩
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🧼 5) Clean-up + Joining
🧹 Primers removed & replaced with DNA 🔁
🧷 DNA Ligase = the glue gun 🔫✨
It seals Okazaki fragments into one continuous strand 🧬✅
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🎯 Final Result (Super important!)
✅ Two identical DNA molecules
Each one = 1 old strand + 1 new strand 🧬♻️
That’s Semi-Conservative Replication 💡
🧠💬 Quick quiz (comment answers!) 😄
1️⃣ Which enzyme “unzips” DNA? 🔓
2️⃣ Which enzyme “glues” fragments? 🧷
3️⃣ DNA is built in which direction? ➡️
🎥 by yourgenome(yt)
@biotechnologyguy
23.5K
HEDNA polymerase synthesize, repair, and replicate DNA by adding complementary nucleotides to a growing strand in the 5’ ➡️ 3’direction.
They ensure high-fidelity genome duplication and repair, utilizing template-directed, precise base pairing during cell division.
#dna #dnapolymerase #celldivision #dnareplication #replication
@hellojudyschool
209.9K
THCracking the code 📝☝️.....#ntaneet #competitiveexams #trick #chemistry#biology
@the_neet.ninja
73.7K
BIEPIGENÉTICA: O Controle Sobre os Genes Além do DNA
A epigenética é o estudo de alterações no funcionamento dos genes que não envolvem mudanças na sequência do DNA. Enquanto o DNA carrega as informações genéticas que herdamos de nossos pais, a epigenética determina como, quando e onde esses genes serão ativados ou desativados. Em outras palavras, é como se o DNA fosse o "hardware" e a epigenética o "software" que controla como ele é usado.
Como a epigenética funciona?
A epigenética opera por meio de mecanismos que regulam a expressão gênica. Os principais processos incluem:
1. Metilação do DNA: Pequenos grupos químicos chamados grupos metil (CH3) são adicionados ao DNA, geralmente desligando os genes. É como colocar uma marca que impede que o gene seja lido.
2. Modificação das histonas: O DNA é enrolado em proteínas chamadas histonas. Alterações químicas nessas proteínas podem tornar o DNA mais ou menos acessível para leitura pelos maquinários celulares.
3. RNA não codificante: Moléculas de RNA podem interferir na produção de proteínas, regulando a expressão de genes.
Fatores que influenciam a epigenética:
A epigenética é altamente sensível ao ambiente. Fatores como alimentação, estresse, exposição a toxinas, exercício físico e até o envelhecimento podem modificar o padrão epigenético. Essas alterações, em alguns casos, podem ser transmitidas para as próximas gerações.
A epigenética e a saúde:
Alterações epigenéticas estão associadas a diversas condições de saúde, como câncer, doenças cardíacas, diabetes e transtornos psiquiátricos. Por exemplo, padrões anormais de metilação do DNA podem desativar genes supressores de tumores, contribuindo para o desenvolvimento do câncer.
Epigenética no cotidiano:
Um dos conceitos mais fascinantes da epigenética é que nosso estilo de vida pode moldar nossa saúde e a de nossos descendentes. Por isso, adotar uma alimentação balanceada, evitar o estresse crônico e praticar exercícios pode impactar positivamente nossa expressão genética.
Continua nos comentarios 👇🏼.
@biotecnologia_descomplicada
2.0M
THThis is #homologousrecombination, one way your cells repair DNA. One look at this machinery and the fact that humans are at a point in biotech where we understand it enough to engineer and program it is insane. And not only that, it’s becoming accessible, our company being the best place to get that know how and materials to do so.
@theodininc
51.6K
SCDNA Packaging
Animation showing the packaging of deoxyribonucleic acid (DNA) around proteins called histones (grey).
The DNA winds tightly into coils that wrap around the histones to form units called nucleosomes. Linker DNA joins the nucleosomes. Further coiling forms strands of chromatin, which condenses during cell division to form structures called chromosomes. DNA forms the genetic basis of nearly all living organisms. The DNA in a cell nucleus (less than 0.1 millimeters across) is over 2 meters in length when unravelled.
© Rhys Lewis, AHS, DECD, UNISA / Equinox Graphics / Science Source
Click on the link in our bio for this video and for more science and medical content.
ScienceSource.com image ID: SS268249
#dna #dnapacking #dnapackaging #genetics #genetic #histone #histones #nucleosomes #nucleosome #chromatin #chromosome #chromosomes
#digitalart #3d #illustration #science #motionart #digitalartist
#video #sciencevideo #scienceteacher #scienceclass #biology 3biologyteacher #biologyclass #medicine #research #bioengineering #engineering #biomedical #biomedicalengineering
@sciencesourcestock
4.7M
VAWhen I thought about analyzing DNA, in my head it was gonna be all about 3D models, but all I see are letters and curves 🥹
#dna #molecularbiology #bioinformatics #microbiology #unholy
@vanmicrobiology
961.6K
BIOne of the most fascinating process in biology.
DNA replication is the biological process by which a cell makes an exact copy of its DNA before cell division. It's essential for growth, repair, and reproduction in all living organisms.
Key Steps in DNA Replication
1. Initiation
- Begins at specific sites called origins of replication.
- Helicase enzyme unwinds the double helix, forming a replication bubble with two replication forks.
- Single-strand binding proteins (SSBs) stabilize the unwound strands.
2. Primer Synthesis
- Primase lays down short RNA primers on each strand to provide a starting point for DNA synthesis.
3. Elongation
- DNA polymerase III adds new nucleotides.
- One strand (the leading strand) is synthesized continuously.
- The other (the lagging strand) is synthesized in short fragments called Okazaki fragments, which are later joined by DNA ligase.
4. Termination
- Once the entire DNA molecule is copied, enzymes remove the RNA primers and replace them with DNA.
- DNA ligase seals any gaps, completing the replication process.
📹 by yourgenome (yt)
#molecularbiology #molecularmedicine #cellmolecularbiology #microbiology
Direction of replication is...
@biologyscienc
418.3K
ALcrazyyyy 😵💫🤣 #dna #test #tiktok #gene #herkunft
@alinacsw
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