{"id":2234,"date":"2020-12-10T11:21:35","date_gmt":"2020-12-10T10:21:35","guid":{"rendered":"https:\/\/www.adntro.com\/?p=2234"},"modified":"2026-03-26T09:22:48","modified_gmt":"2026-03-26T08:22:48","slug":"curiosidadadnparteii","status":"publish","type":"post","link":"https:\/\/adntro.com\/en\/blog\/genetic-curiosities\/curiosity\/","title":{"rendered":"Top 10 curiosities about DNA: part II"},"content":{"rendered":"

DNA is one of the most intriguing molecules in existence, as it contains all the information necessary to make us who we are. In the previous Top 10 Curiosities about DNA: part I<\/a> we saw some curious facts about their size, about how the human genome was sequenced for the first time and how much it resembles that of other species, and also about genetic fingerprinting and sex-linked diseases. Continue exploring with ADNTRO<\/a> this fascinating molecule.<\/p>\n\n\n\n

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6. Earth Biogenome Project<\/h2>\n\n\n\n

In July 1995, the first sequencing of the complete genome<\/a> of an organism, the bacterium Haemophilus influenzae. <\/em>Since then, and thanks to the rapid advance of massive sequencing techniques, it has been possible to sequence the entire genome of almost fifteen thousand eukaryotic and prokaryotic organisms.<\/p>\n\n\n\n

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Recently, an international consortium of scientists has proposed what may be the most ambitious project in the entire history of biology, called Project Earth Biogenome<\/a>. <\/strong>The initiative consists of sequencing, cataloging and analyzing the genomes of eukaryotic species <\/strong>(except for bacteria and archaea), a task that according to experts can be completed in ten years with a budget of 4.7 billion dollars.<\/p>\n\n\n\n

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Estimates indicate that there are between ten and fifteen million eukaryotic species of plants, animals and fungi on Earth, but only two million of those species are actually known, so the Earth Biogenome Project would imply a complete transformation of our scientific understanding of Life on earth.<\/p>\n\n\n\n

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7. Curious gene names<\/h2>\n\n\n\n

Our genome is made up of more than twenty thousand genes, but How is a gene named when it is discovered?<\/strong> There are only two general rules, the first, not to name the discoverer, tempting as this may be, and the second, to try to put a name that refers to the function of that gene. <\/p>\n\n\n\n

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These broad rules allow you to unleash your imagination and play with double meanings. Thus, they exist genes with the most diverse names.<\/strong> For example, the discoverers of a cancer-related gene named it POKEMON<\/em>, which led to legal disputes with the Nintendo brand. The fruit fly is a gold mine when it comes to curious gene names. In it we find a gene called COITUS INTERRUPTUS,<\/em> which makes intercourse last 40% less, and another called KEN AND BARBIE<\/em>, which implies that the external genitalia do not develop. They both refer to the function of the gene, right?<\/p>\n\n\n\n

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8. Alana Saarinen, the girl with three parents<\/h2>\n\n\n\n

Alana Saarinen was conceived through fertility treatment<\/strong> pioneer in his time, called cytoplasmic transfer<\/strong>, which is currently banned and completely deprecated. Cytoplasmic transfer was initiated in the late 1990s in the United States and consists of transferring a part of the cytoplasm of a healthy oocyte to the cytoplasm of an oocyte that shows a decreased capacity for development. In the healthy cytoplasm to be transferred there are, among other cellular organelles, the mitochondria, which have their own DNA, and which is different from the DNA contained in the cell nucleus. This causes the resulting cytoplasm to have its own mitochondrial DNA and external mitochondrial DNA, from the donor.<\/p>\n\n\n\n

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Because mitochondrial DNA is inherited exclusively through the mother, Alana Saarinen would have genetic information for two mothers and one father.<\/strong> It is estimated that between 30 and 50 babies have been born worldwide through the cytoplasmic transfer technique, which is why they carry the DNA of three parents. If Alana had female offspring, her daughter would inherit her unusual genetic code, with the possible implications that this entails.<\/p>\n\n\n\n

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Although cytoplasmic transfer has not been performed in years, a technique called mitochondrial replacement<\/strong>, based on using donor mitochondria to avoid so-called mitochondrial diseases, which are rare, but quite serious. If this technique is approved and used, we would again find babies with three genetic parents.<\/p>\n\n\n\n

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9. History of man through genetics<\/h2>\n\n\n\n

Evolution and genetics <\/strong>They are two interconnected branches of science, since the first is produced through the second. In other words, the evolution<\/strong> is the process of change of organisms through genetic mutations<\/strong> involving variation in populations. The environment interacts with these variations by selecting those individuals that are best adapted to their environment, which will have more offspring and will be able to evolve into new species. <\/p>\n\n\n\n

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The archaeological sites of Atapuerca, in Burgos, are a benchmark in the study of prehistory and human evolution<\/strong>, since from them more than 90% have been obtained from the hominid fossil records from all over the planet. In addition, these remains belong to very different time periods, the oldest dating from 1.4 million years ago, and the most recent from the Middle Ages.<\/p>\n\n\n\n

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The comparative genomics<\/strong> is a powerful tool for the study of the feeling of human evolution<\/a>.<\/strong> Through the analysis of fossil remains, and the changes experienced in the genomes through time, space, and even culture, it has been possible to clarify many very relevant questions to understand the history of man, which goes back hundreds of years. thousands of years ago. Some of the achievements that have been made in this field thanks to genetics are:<\/p>\n\n\n\n

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