Tag Archives: genome

Gene expression and regulation: It’s the location, baby.

Perhaps it is something like the real-estate business. What three things make a difference for selling a house? Location, location and location. Thus it may be for at least some of the crucial genes involved in the development of the human embryo. Specifically, researchers at the European Molecular Biology Laboratory (Heidelberg, Germany) found that the […]
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Fetal DNA sequencing: Reading ma and pa’s genome

Depending on how successful interpretation of the personal genome becomes, any method that makes the process easier for collecting the DNA is progress. That’s one way of saying that the future of personal genome medicine depends on the research that finds the links between genes and disease, and how easy and inexpensive it is to […]
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Bonobo Genome: Our ever-lovin’ kin get closer

Ulindi, a bonobo to love……..credit: Michael Seres These days the genome sequencing of yet another plant, animal or insect barely raises an eyebrow, even in the scientific community. It’s important work that increasingly powerful technology and declining cost has made routine, which is a good thing. Once in a while though, a new ‘complete genome […]
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New sequencing technique opens doors for epigenetics

What’s the difference between 5mC and 5hmC? Yes, the “h” but it is much more than that. Both are in biochemistry shorthand, which unless you’re a geneticist or biochemist you’ve probably never heard of and are not likely to remember. So let’s cut to the chase, oversimplified though it may be: As you almost certainly […]
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microDNA: A new piece of genetics puzzle

In the beginning the big discovery was the existence of DNA and RNA. Eventually more refined experiments and better equipment revealed that RNA in particular came in many forms and functions, for example, micro RNA (miRNA) for DNA regulation or piwi-interacting RNA (piRNA) for transposon defense. So far there are 25-27 types of RNA. However, […]
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Personal genome disease risk analysis: New study finds important limits

As the cost of sequencing a person’s genome has sharply declined, the enthusiasm for using that genomic knowledge to predict susceptibility to gene-based illness has grown. In fact, it’s been one of the most common topics of medicine in the public media for more than a year. This includes intense debates about whether it is […]
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Human genetics: The mysterious unequal mutation by sex

By the numbers, geneticists thought about mutations like this: There are six billion pieces (nucleotides) of genetic information in the genome. Three billion provided by the mother and three billion from the father. Based on evolutionary studies, previous estimates reckoned about 100-200 mutations would be passed on to each child. It was assumed that because […]
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Breast cancer study: 50 women, 1700 genetic mutations

It isn’t always true for science, but it sure seems like the more we learn, the more complicated the knowledge becomes. Take breast cancer for an example. Every few months a new study is published that announces the discovery that this that or another gene is ‘linked to breast cancer.’ Likewise there is a stream […]
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Part of what makes us human may be what’s missing

Here’s one of those scientific questions that contains a highly suggestive fact: Why is it that the tiny water flea (Daphnia pulex) has a record 31,000 genes and the human – the infinitely more complex human – has only 23,000 genes? Here’s another similar question: How is it that the human species is so different […]
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Oh Daphnia, why so many genes?

Ms. Water flea, Daphnia pulex…..credit: Wiki Commons This equal sign, =, is about as big the known champion of the gene-filled genome. Little Daphnia pulex, variously labeled a crustacean (like shrimp) or ‘the water flea,’ is the first of its subphylum to have its genome sequenced. Lo and behold: Daphnia’s genome has more genes – […]
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