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Researchers revive 28,000-year-old woolly mammoth DNA

An international team of biologists has done the seemingly impossible. They’ve revived cell nuclei from a 28,000-year-old frozen woolly mammoth. While the world will have to wait for the first full-blown mammoth resurrection, this could be a big step in that direction. The team’s findings offer researchers hope that ancient DNA, though damaged, could one […]

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Distribution of DNA during Cell division | Class 11 Biology

The topic of this presentation is DNA Distribution during cell division, chapter 10, part 4. When we teach meiosis to our students, some common confusions regarding the topic remain unanswered and we get comments on YouTube that if the number of chromosomes becomes half in meiosis 1 then what happens in meiosis 2? And some […]

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Cancer, How Cancer Starts, How Cancer Spreads, Where and Why, Animation.

The number of cells in a tissue is determined by the balance between cell division and cell death. Uncontrollable cell division leads to formation of abnormal growths called tumors. Tumors can be benign or malignant. Benign tumors are slow-growing and constrained by surrounding connective tissue so they do NOT spread to other organs. They can […]

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Two-Thirds of All Cancers Are Caused by One Thing: Your DNA

Cancer is made of cells, just like anything. A cancerous tumor is simply a collection of cells, that are rebelling. There are trillions of cells in the human body (estimates range from about 15 to 70 trillion, it’s hard to say for sure). All these cells are making copies of themselves, replicating and copying their […]

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