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Posts tagged DNA

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Dinosaur Bones: What ancient proteins can tell us about dinosaurs

Remember in Jurassic Park when they got dinosaur DNA from an ancient mosquito’s stomach? Well, if they had been interested in dinosaur proteins, they only had to look at a dinosaur bone. 

Dinosaur bones are at least 65 million years old. And all of the meat has turned to stone. Over this amount of time and with this much abuse, scientists thought no DNA or proteins could survive. They were wrong. 

Recently, scientists were able to pull proteins out of a T. rex bone. Now they have done some additional work that suggests dinosaurs are closely related to birds. It is amazing that our technology has become so sensitive that we can examine dinosaur proteins.

Filed under Science DNA Cloning Dinosaurs Jurassic Park Developmental biology Proteins

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Naked mole rat's genome 'blueprint' revealed

The industrious but unlovely naked mole rat is the latest creature to have its genome sequenced by scientists.

A genetic blueprint for this bizarre-looking rodent could help researchers understand why it is so long-lived.

Naked mole rats are also of interest to scientists because they appear to have some resistance to cancer.

A team from the University of Liverpool, UK, led the project and have made the “first draft” of the genome available online for other researchers.

link

Filed under science genome cancer naked mole rat DNA

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Mother's diet during pregnancy alters baby's DNA

A mother’s diet during pregnancy can alter the DNA of her child and increase the risk of obesity, according to researchers.

The study, to be published in the journal Diabetes, showed that eating low levels of carbohydrate changed bits of DNA.

It then showed children with these changes were fatter.

The British Heart Foundation called for better nutritional and lifestyle support for women.

It is thought that a developing baby tries to predict the environment it will be born into, taking cues from its mother and adjusting its DNA.

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Filed under pregnancy birth DNA diet Science Biology women baby biology genetics developmental biology